Home / 83,385.20-115,072.50-45,145.58

Finding the Fourth Proportional to 83,385.20, 115,072.50 and 45,145.58

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Solution

The fourth proportional to 83,385.20, 115,072.50 and 45,145.58 is: 62,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,385.20 : 115,072.50 = 45,145.58 : x
  2. Step 2: Convert to fraction form
    83,385.20/115,072.50 = 45,145.58/x
  3. Step 3: Cross multiply
    83,385.20x = 115,072.50 × 45,145.58
  4. Step 4: Simplify right side
    83,385.20x = 5,195,014,711.75
  5. Step 5: Solve for x
    x = 5,195,014,711.75/83,385.20
  6. Step 6: Final answer
    x = 62,301.40

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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.