Home / 87,129,619.20-130,694,428.80-56,672,582.40

Finding the Fourth Proportional to 87,129,619.20, 130,694,428.80 and 56,672,582.40

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Solution

The fourth proportional to 87,129,619.20, 130,694,428.80 and 56,672,582.40 is: 85,008,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,129,619.20 : 130,694,428.80 = 56,672,582.40 : x
  2. Step 2: Convert to fraction form
    87,129,619.20/130,694,428.80 = 56,672,582.40/x
  3. Step 3: Cross multiply
    87,129,619.20x = 130,694,428.80 × 56,672,582.40
  4. Step 4: Simplify right side
    87,129,619.20x = 7,406,790,785,388,933
  5. Step 5: Solve for x
    x = 7,406,790,785,388,933/87,129,619.20
  6. Step 6: Final answer
    x = 85,008,873.60

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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.