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Finding the Fourth Proportional to 145,404.34, 218,116.87 and 38,787.68

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Solution

The fourth proportional to 145,404.34, 218,116.87 and 38,787.68 is: 58,184.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,404.34 : 218,116.87 = 38,787.68 : x
  2. Step 2: Convert to fraction form
    145,404.34/218,116.87 = 38,787.68/x
  3. Step 3: Cross multiply
    145,404.34x = 218,116.87 × 38,787.68
  4. Step 4: Simplify right side
    145,404.34x = 8,460,247,804.48
  5. Step 5: Solve for x
    x = 8,460,247,804.48/145,404.34
  6. Step 6: Final answer
    x = 58,184.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.