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Finding the Fourth Proportional to 83,486.60, 115,210.84 and 45,760.76

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Solution

The fourth proportional to 83,486.60, 115,210.84 and 45,760.76 is: 63,149.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,486.60 : 115,210.84 = 45,760.76 : x
  2. Step 2: Convert to fraction form
    83,486.60/115,210.84 = 45,760.76/x
  3. Step 3: Cross multiply
    83,486.60x = 115,210.84 × 45,760.76
  4. Step 4: Simplify right side
    83,486.60x = 5,272,135,598.64
  5. Step 5: Solve for x
    x = 5,272,135,598.64/83,486.60
  6. Step 6: Final answer
    x = 63,149.48

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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.