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Finding the Fourth Proportional to 64,689,318.78, 89,272,502.90 and 35,321,815.31

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Solution

The fourth proportional to 64,689,318.78, 89,272,502.90 and 35,321,815.31 is: 48,744,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,689,318.78 : 89,272,502.90 = 35,321,815.31 : x
  2. Step 2: Convert to fraction form
    64,689,318.78/89,272,502.90 = 35,321,815.31/x
  3. Step 3: Cross multiply
    64,689,318.78x = 89,272,502.90 × 35,321,815.31
  4. Step 4: Simplify right side
    64,689,318.78x = 3,153,266,859,072,267.50
  5. Step 5: Solve for x
    x = 3,153,266,859,072,267.50/64,689,318.78
  6. Step 6: Final answer
    x = 48,744,783.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.