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Finding the Fourth Proportional to 27,152,978.70, 40,729,468.05 and 15,673,853.10

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Solution

The fourth proportional to 27,152,978.70, 40,729,468.05 and 15,673,853.10 is: 23,510,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,152,978.70 : 40,729,468.05 = 15,673,853.10 : x
  2. Step 2: Convert to fraction form
    27,152,978.70/40,729,468.05 = 15,673,853.10/x
  3. Step 3: Cross multiply
    27,152,978.70x = 40,729,468.05 × 15,673,853.10
  4. Step 4: Simplify right side
    27,152,978.70x = 638,387,699,056,843.38
  5. Step 5: Solve for x
    x = 638,387,699,056,843.38/27,152,978.70
  6. Step 6: Final answer
    x = 23,510,779.65

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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.