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Finding the Fourth Proportional to 74,352, 102,606.48 and 40,818.72

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Solution

The fourth proportional to 74,352, 102,606.48 and 40,818.72 is: 56,330.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,352 : 102,606.48 = 40,818.72 : x
  2. Step 2: Convert to fraction form
    74,352/102,606.48 = 40,818.72/x
  3. Step 3: Cross multiply
    74,352x = 102,606.48 × 40,818.72
  4. Step 4: Simplify right side
    74,352x = 4,188,265,177.31
  5. Step 5: Solve for x
    x = 4,188,265,177.31/74,352
  6. Step 6: Final answer
    x = 56,330.23

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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.