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Finding the Fourth Proportional to 98,406,489.60, 147,693,715.20 and 43,902,950.40

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Solution

The fourth proportional to 98,406,489.60, 147,693,715.20 and 43,902,950.40 is: 65,891,892.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,406,489.60 : 147,693,715.20 = 43,902,950.40 : x
  2. Step 2: Convert to fraction form
    98,406,489.60/147,693,715.20 = 43,902,950.40/x
  3. Step 3: Cross multiply
    98,406,489.60x = 147,693,715.20 × 43,902,950.40
  4. Step 4: Simplify right side
    98,406,489.60x = 6,484,189,852,817,325
  5. Step 5: Solve for x
    x = 6,484,189,852,817,325/98,406,489.60
  6. Step 6: Final answer
    x = 65,891,892.69

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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.