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Finding the Fourth Proportional to 105,351.60, 145,398.87 and 60,045.87

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Solution

The fourth proportional to 105,351.60, 145,398.87 and 60,045.87 is: 82,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,351.60 : 145,398.87 = 60,045.87 : x
  2. Step 2: Convert to fraction form
    105,351.60/145,398.87 = 60,045.87/x
  3. Step 3: Cross multiply
    105,351.60x = 145,398.87 × 60,045.87
  4. Step 4: Simplify right side
    105,351.60x = 8,730,601,646.17
  5. Step 5: Solve for x
    x = 8,730,601,646.17/105,351.60
  6. Step 6: Final answer
    x = 82,871.09

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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.