Home / 72,688,998.30-109,033,497.45-52,281,663.90

Finding the Fourth Proportional to 72,688,998.30, 109,033,497.45 and 52,281,663.90

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Solution

The fourth proportional to 72,688,998.30, 109,033,497.45 and 52,281,663.90 is: 78,422,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,688,998.30 : 109,033,497.45 = 52,281,663.90 : x
  2. Step 2: Convert to fraction form
    72,688,998.30/109,033,497.45 = 52,281,663.90/x
  3. Step 3: Cross multiply
    72,688,998.30x = 109,033,497.45 × 52,281,663.90
  4. Step 4: Simplify right side
    72,688,998.30x = 5,700,452,667,522,407
  5. Step 5: Solve for x
    x = 5,700,452,667,522,407/72,688,998.30
  6. Step 6: Final answer
    x = 78,422,495.85

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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.