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Finding the Fourth Proportional to 76,987.40, 115,480.98 and 24,392.78

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Solution

The fourth proportional to 76,987.40, 115,480.98 and 24,392.78 is: 36,589.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,987.40 : 115,480.98 = 24,392.78 : x
  2. Step 2: Convert to fraction form
    76,987.40/115,480.98 = 24,392.78/x
  3. Step 3: Cross multiply
    76,987.40x = 115,480.98 × 24,392.78
  4. Step 4: Simplify right side
    76,987.40x = 2,816,901,994.97
  5. Step 5: Solve for x
    x = 2,816,901,994.97/76,987.40
  6. Step 6: Final answer
    x = 36,589.13

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1.5x scale

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.