Home / 90,720.39-125,139.45-58,444.38

Finding the Fourth Proportional to 90,720.39, 125,139.45 and 58,444.38

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Solution

The fourth proportional to 90,720.39, 125,139.45 and 58,444.38 is: 80,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,720.39 : 125,139.45 = 58,444.38 : x
  2. Step 2: Convert to fraction form
    90,720.39/125,139.45 = 58,444.38/x
  3. Step 3: Cross multiply
    90,720.39x = 125,139.45 × 58,444.38
  4. Step 4: Simplify right side
    90,720.39x = 7,313,697,568.79
  5. Step 5: Solve for x
    x = 7,313,697,568.79/90,720.39
  6. Step 6: Final answer
    x = 80,618.01

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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.