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Finding the Fourth Proportional to 76,327.97, 105,328.89 and 42,337.80

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Solution

The fourth proportional to 76,327.97, 105,328.89 and 42,337.80 is: 58,424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,327.97 : 105,328.89 = 42,337.80 : x
  2. Step 2: Convert to fraction form
    76,327.97/105,328.89 = 42,337.80/x
  3. Step 3: Cross multiply
    76,327.97x = 105,328.89 × 42,337.80
  4. Step 4: Simplify right side
    76,327.97x = 4,459,393,479.04
  5. Step 5: Solve for x
    x = 4,459,393,479.04/76,327.97
  6. Step 6: Final answer
    x = 58,424.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.