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Finding the Fourth Proportional to 145,374.28, 218,061.42 and 45,534.83

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Solution

The fourth proportional to 145,374.28, 218,061.42 and 45,534.83 is: 68,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,374.28 : 218,061.42 = 45,534.83 : x
  2. Step 2: Convert to fraction form
    145,374.28/218,061.42 = 45,534.83/x
  3. Step 3: Cross multiply
    145,374.28x = 218,061.42 × 45,534.83
  4. Step 4: Simplify right side
    145,374.28x = 9,929,389,689.26
  5. Step 5: Solve for x
    x = 9,929,389,689.26/145,374.28
  6. Step 6: Final answer
    x = 68,302.25

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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.