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Finding the Fourth Proportional to 98,344.40, 147,564.60 and 45,726.80

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Solution

The fourth proportional to 98,344.40, 147,564.60 and 45,726.80 is: 68,612.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,344.40 : 147,564.60 = 45,726.80 : x
  2. Step 2: Convert to fraction form
    98,344.40/147,564.60 = 45,726.80/x
  3. Step 3: Cross multiply
    98,344.40x = 147,564.60 × 45,726.80
  4. Step 4: Simplify right side
    98,344.40x = 6,747,656,951.28
  5. Step 5: Solve for x
    x = 6,747,656,951.28/98,344.40
  6. Step 6: Final answer
    x = 68,612.52

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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.