Home / 30,221,930.40-45,338,425.20-12,272,848.80

Finding the Fourth Proportional to 30,221,930.40, 45,338,425.20 and 12,272,848.80

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Solution

The fourth proportional to 30,221,930.40, 45,338,425.20 and 12,272,848.80 is: 18,411,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221,930.40 : 45,338,425.20 = 12,272,848.80 : x
  2. Step 2: Convert to fraction form
    30,221,930.40/45,338,425.20 = 12,272,848.80/x
  3. Step 3: Cross multiply
    30,221,930.40x = 45,338,425.20 × 12,272,848.80
  4. Step 4: Simplify right side
    30,221,930.40x = 556,431,637,309,709.81
  5. Step 5: Solve for x
    x = 556,431,637,309,709.81/30,221,930.40
  6. Step 6: Final answer
    x = 18,411,518.72

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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.