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Finding the Fourth Proportional to 89,108,978.80, 133,644,805.80 and 43,703,359.60

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Solution

The fourth proportional to 89,108,978.80, 133,644,805.80 and 43,703,359.60 is: 65,545,886.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,108,978.80 : 133,644,805.80 = 43,703,359.60 : x
  2. Step 2: Convert to fraction form
    89,108,978.80/133,644,805.80 = 43,703,359.60/x
  3. Step 3: Cross multiply
    89,108,978.80x = 133,644,805.80 × 43,703,359.60
  4. Step 4: Simplify right side
    89,108,978.80x = 5,840,727,006,549,566
  5. Step 5: Solve for x
    x = 5,840,727,006,549,566/89,108,978.80
  6. Step 6: Final answer
    x = 65,545,886.46

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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.