Home / 85,788,035.20-128,540,335.20-73,033,451.20

Finding the Fourth Proportional to 85,788,035.20, 128,540,335.20 and 73,033,451.20

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Solution

The fourth proportional to 85,788,035.20, 128,540,335.20 and 73,033,451.20 is: 109,429,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788,035.20 : 128,540,335.20 = 73,033,451.20 : x
  2. Step 2: Convert to fraction form
    85,788,035.20/128,540,335.20 = 73,033,451.20/x
  3. Step 3: Cross multiply
    85,788,035.20x = 128,540,335.20 × 73,033,451.20
  4. Step 4: Simplify right side
    85,788,035.20x = 9,387,744,298,060,842
  5. Step 5: Solve for x
    x = 9,387,744,298,060,842/85,788,035.20
  6. Step 6: Final answer
    x = 109,429,529.14

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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.