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Finding the Fourth Proportional to 145,402.70, 218,104.08 and 45,562.87

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Solution

The fourth proportional to 145,402.70, 218,104.08 and 45,562.87 is: 68,344.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,402.70 : 218,104.08 = 45,562.87 : x
  2. Step 2: Convert to fraction form
    145,402.70/218,104.08 = 45,562.87/x
  3. Step 3: Cross multiply
    145,402.70x = 218,104.08 × 45,562.87
  4. Step 4: Simplify right side
    145,402.70x = 9,937,447,945.28
  5. Step 5: Solve for x
    x = 9,937,447,945.28/145,402.70
  6. Step 6: Final answer
    x = 68,344.32

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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.