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Finding the Fourth Proportional to 83,410.55, 115,106.63 and 45,170.40

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Solution

The fourth proportional to 83,410.55, 115,106.63 and 45,170.40 is: 62,335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,410.55 : 115,106.63 = 45,170.40 : x
  2. Step 2: Convert to fraction form
    83,410.55/115,106.63 = 45,170.40/x
  3. Step 3: Cross multiply
    83,410.55x = 115,106.63 × 45,170.40
  4. Step 4: Simplify right side
    83,410.55x = 5,199,412,519.75
  5. Step 5: Solve for x
    x = 5,199,412,519.75/83,410.55
  6. Step 6: Final answer
    x = 62,335.19

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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.