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Finding the Fourth Proportional to 83,995.20, 115,983.52 and 75,026.88

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Solution

The fourth proportional to 83,995.20, 115,983.52 and 75,026.88 is: 103,599.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,995.20 : 115,983.52 = 75,026.88 : x
  2. Step 2: Convert to fraction form
    83,995.20/115,983.52 = 75,026.88/x
  3. Step 3: Cross multiply
    83,995.20x = 115,983.52 × 75,026.88
  4. Step 4: Simplify right side
    83,995.20x = 8,701,881,637.02
  5. Step 5: Solve for x
    x = 8,701,881,637.02/83,995.20
  6. Step 6: Final answer
    x = 103,599.75

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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.