Home / 85,212,005.20-127,818,007.80-52,900,392.40

Finding the Fourth Proportional to 85,212,005.20, 127,818,007.80 and 52,900,392.40

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Solution

The fourth proportional to 85,212,005.20, 127,818,007.80 and 52,900,392.40 is: 79,350,588.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212,005.20 : 127,818,007.80 = 52,900,392.40 : x
  2. Step 2: Convert to fraction form
    85,212,005.20/127,818,007.80 = 52,900,392.40/x
  3. Step 3: Cross multiply
    85,212,005.20x = 127,818,007.80 × 52,900,392.40
  4. Step 4: Simplify right side
    85,212,005.20x = 6,761,622,768,406,260
  5. Step 5: Solve for x
    x = 6,761,622,768,406,260/85,212,005.20
  6. Step 6: Final answer
    x = 79,350,588.60

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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.