Home / 90,720.57-125,209.89-58,446.12

Finding the Fourth Proportional to 90,720.57, 125,209.89 and 58,446.12

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Solution

The fourth proportional to 90,720.57, 125,209.89 and 58,446.12 is: 80,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,720.57 : 125,209.89 = 58,446.12 : x
  2. Step 2: Convert to fraction form
    90,720.57/125,209.89 = 58,446.12/x
  3. Step 3: Cross multiply
    90,720.57x = 125,209.89 × 58,446.12
  4. Step 4: Simplify right side
    90,720.57x = 7,318,032,256.13
  5. Step 5: Solve for x
    x = 7,318,032,256.13/90,720.57
  6. Step 6: Final answer
    x = 80,665.63

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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.