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Finding the Fourth Proportional to 98,691, 148,037.76 and 28,570.38

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Solution

The fourth proportional to 98,691, 148,037.76 and 28,570.38 is: 42,855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,691 : 148,037.76 = 28,570.38 : x
  2. Step 2: Convert to fraction form
    98,691/148,037.76 = 28,570.38/x
  3. Step 3: Cross multiply
    98,691x = 148,037.76 × 28,570.38
  4. Step 4: Simplify right side
    98,691x = 4,229,495,057.55
  5. Step 5: Solve for x
    x = 4,229,495,057.55/98,691
  6. Step 6: Final answer
    x = 42,855.93

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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.