Home / 91,581.28-126,392.80-55,792.32

Finding the Fourth Proportional to 91,581.28, 126,392.80 and 55,792.32

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Solution

The fourth proportional to 91,581.28, 126,392.80 and 55,792.32 is: 76,999.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,581.28 : 126,392.80 = 55,792.32 : x
  2. Step 2: Convert to fraction form
    91,581.28/126,392.80 = 55,792.32/x
  3. Step 3: Cross multiply
    91,581.28x = 126,392.80 × 55,792.32
  4. Step 4: Simplify right side
    91,581.28x = 7,051,747,543.30
  5. Step 5: Solve for x
    x = 7,051,747,543.30/91,581.28
  6. Step 6: Final answer
    x = 76,999.88

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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.