Home / 30,406,987,001.42-45,636,739,002.25-21,097,272,650.76

Finding the Fourth Proportional to 30,406,987,001.42, 45,636,739,002.25 and 21,097,272,650.76

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Solution

The fourth proportional to 30,406,987,001.42, 45,636,739,002.25 and 21,097,272,650.76 is: 31,664,127,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406,987,001.42 : 45,636,739,002.25 = 21,097,272,650.76 : x
  2. Step 2: Convert to fraction form
    30,406,987,001.42/45,636,739,002.25 = 21,097,272,650.76/x
  3. Step 3: Cross multiply
    30,406,987,001.42x = 45,636,739,002.25 × 21,097,272,650.76
  4. Step 4: Simplify right side
    30,406,987,001.42x = 962,810,725,622,041,018,368
  5. Step 5: Solve for x
    x = 962,810,725,622,041,018,368/30,406,987,001.42
  6. Step 6: Final answer
    x = 31,664,127,905.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.