Home / 90,979.07-125,553.75-52,738.76

Finding the Fourth Proportional to 90,979.07, 125,553.75 and 52,738.76

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Solution

The fourth proportional to 90,979.07, 125,553.75 and 52,738.76 is: 72,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,979.07 : 125,553.75 = 52,738.76 : x
  2. Step 2: Convert to fraction form
    90,979.07/125,553.75 = 52,738.76/x
  3. Step 3: Cross multiply
    90,979.07x = 125,553.75 × 52,738.76
  4. Step 4: Simplify right side
    90,979.07x = 6,621,549,204.46
  5. Step 5: Solve for x
    x = 6,621,549,204.46/90,979.07
  6. Step 6: Final answer
    x = 72,781.02

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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.