Home / 91,981.66-126,938.20-56,187.76

Finding the Fourth Proportional to 91,981.66, 126,938.20 and 56,187.76

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Solution

The fourth proportional to 91,981.66, 126,938.20 and 56,187.76 is: 77,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.66 : 126,938.20 = 56,187.76 : x
  2. Step 2: Convert to fraction form
    91,981.66/126,938.20 = 56,187.76/x
  3. Step 3: Cross multiply
    91,981.66x = 126,938.20 × 56,187.76
  4. Step 4: Simplify right side
    91,981.66x = 7,132,373,116.43
  5. Step 5: Solve for x
    x = 7,132,373,116.43/91,981.66
  6. Step 6: Final answer
    x = 77,541.25

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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.