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Finding the Fourth Proportional to 98,622.86, 147,959.12 and 28,501.70

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Solution

The fourth proportional to 98,622.86, 147,959.12 and 28,501.70 is: 42,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,622.86 : 147,959.12 = 28,501.70 : x
  2. Step 2: Convert to fraction form
    98,622.86/147,959.12 = 28,501.70/x
  3. Step 3: Cross multiply
    98,622.86x = 147,959.12 × 28,501.70
  4. Step 4: Simplify right side
    98,622.86x = 4,217,085,781.96
  5. Step 5: Solve for x
    x = 4,217,085,781.96/98,622.86
  6. Step 6: Final answer
    x = 42,759.72

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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.