Home / 91,981.47-126,944.95-51,149.66

Finding the Fourth Proportional to 91,981.47, 126,944.95 and 51,149.66

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Solution

The fourth proportional to 91,981.47, 126,944.95 and 51,149.66 is: 70,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.47 : 126,944.95 = 51,149.66 : x
  2. Step 2: Convert to fraction form
    91,981.47/126,944.95 = 51,149.66/x
  3. Step 3: Cross multiply
    91,981.47x = 126,944.95 × 51,149.66
  4. Step 4: Simplify right side
    91,981.47x = 6,493,191,470.28
  5. Step 5: Solve for x
    x = 6,493,191,470.28/91,981.47
  6. Step 6: Final answer
    x = 70,592.38

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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.