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Finding the Fourth Proportional to 91,373.80, 137,070.30 and 29,029.80

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Solution

The fourth proportional to 91,373.80, 137,070.30 and 29,029.80 is: 43,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,373.80 : 137,070.30 = 29,029.80 : x
  2. Step 2: Convert to fraction form
    91,373.80/137,070.30 = 29,029.80/x
  3. Step 3: Cross multiply
    91,373.80x = 137,070.30 × 29,029.80
  4. Step 4: Simplify right side
    91,373.80x = 3,979,123,394.94
  5. Step 5: Solve for x
    x = 3,979,123,394.94/91,373.80
  6. Step 6: Final answer
    x = 43,547.75

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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.