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Finding the Fourth Proportional to 91,710.30, 137,565.45 and 36,306.30

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Solution

The fourth proportional to 91,710.30, 137,565.45 and 36,306.30 is: 54,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,710.30 : 137,565.45 = 36,306.30 : x
  2. Step 2: Convert to fraction form
    91,710.30/137,565.45 = 36,306.30/x
  3. Step 3: Cross multiply
    91,710.30x = 137,565.45 × 36,306.30
  4. Step 4: Simplify right side
    91,710.30x = 4,994,492,497.34
  5. Step 5: Solve for x
    x = 4,994,492,497.34/91,710.30
  6. Step 6: Final answer
    x = 54,459.45

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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.