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Finding the Fourth Proportional to 98,392.40, 147,572.76 and 28,255.76

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Solution

The fourth proportional to 98,392.40, 147,572.76 and 28,255.76 is: 42,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,392.40 : 147,572.76 = 28,255.76 : x
  2. Step 2: Convert to fraction form
    98,392.40/147,572.76 = 28,255.76/x
  3. Step 3: Cross multiply
    98,392.40x = 147,572.76 × 28,255.76
  4. Step 4: Simplify right side
    98,392.40x = 4,169,780,489.10
  5. Step 5: Solve for x
    x = 4,169,780,489.10/98,392.40
  6. Step 6: Final answer
    x = 42,379.09

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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.