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Finding the Fourth Proportional to 145,603.92, 218,381.52 and 40,433.52

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Solution

The fourth proportional to 145,603.92, 218,381.52 and 40,433.52 is: 60,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,603.92 : 218,381.52 = 40,433.52 : x
  2. Step 2: Convert to fraction form
    145,603.92/218,381.52 = 40,433.52/x
  3. Step 3: Cross multiply
    145,603.92x = 218,381.52 × 40,433.52
  4. Step 4: Simplify right side
    145,603.92x = 8,829,933,556.55
  5. Step 5: Solve for x
    x = 8,829,933,556.55/145,603.92
  6. Step 6: Final answer
    x = 60,643.52

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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.