Home / 91,981.64-137,986.86-29,658.44

Finding the Fourth Proportional to 91,981.64, 137,986.86 and 29,658.44

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Solution

The fourth proportional to 91,981.64, 137,986.86 and 29,658.44 is: 44,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.64 : 137,986.86 = 29,658.44 : x
  2. Step 2: Convert to fraction form
    91,981.64/137,986.86 = 29,658.44/x
  3. Step 3: Cross multiply
    91,981.64x = 137,986.86 × 29,658.44
  4. Step 4: Simplify right side
    91,981.64x = 4,092,475,008.10
  5. Step 5: Solve for x
    x = 4,092,475,008.10/91,981.64
  6. Step 6: Final answer
    x = 44,492.30

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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.