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Finding the Fourth Proportional to 74,608.59, 102,731.84 and 56,238.39

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Solution

The fourth proportional to 74,608.59, 102,731.84 and 56,238.39 is: 77,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,608.59 : 102,731.84 = 56,238.39 : x
  2. Step 2: Convert to fraction form
    74,608.59/102,731.84 = 56,238.39/x
  3. Step 3: Cross multiply
    74,608.59x = 102,731.84 × 56,238.39
  4. Step 4: Simplify right side
    74,608.59x = 5,777,473,818.31
  5. Step 5: Solve for x
    x = 5,777,473,818.31/74,608.59
  6. Step 6: Final answer
    x = 77,437.11

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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.