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Finding the Fourth Proportional to 74,516.93, 102,780.50 and 45,798.89

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Solution

The fourth proportional to 74,516.93, 102,780.50 and 45,798.89 is: 63,169.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,516.93 : 102,780.50 = 45,798.89 : x
  2. Step 2: Convert to fraction form
    74,516.93/102,780.50 = 45,798.89/x
  3. Step 3: Cross multiply
    74,516.93x = 102,780.50 × 45,798.89
  4. Step 4: Simplify right side
    74,516.93x = 4,707,232,456.17
  5. Step 5: Solve for x
    x = 4,707,232,456.17/74,516.93
  6. Step 6: Final answer
    x = 63,169.97

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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.