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Finding the Fourth Proportional to 74,508.60, 102,822.88 and 42,677.47

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Solution

The fourth proportional to 74,508.60, 102,822.88 and 42,677.47 is: 58,895.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,508.60 : 102,822.88 = 42,677.47 : x
  2. Step 2: Convert to fraction form
    74,508.60/102,822.88 = 42,677.47/x
  3. Step 3: Cross multiply
    74,508.60x = 102,822.88 × 42,677.47
  4. Step 4: Simplify right side
    74,508.60x = 4,388,220,376.51
  5. Step 5: Solve for x
    x = 4,388,220,376.51/74,508.60
  6. Step 6: Final answer
    x = 58,895.49

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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.