Home / 91,810.32-126,687.84-51,515.76

Finding the Fourth Proportional to 91,810.32, 126,687.84 and 51,515.76

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Solution

The fourth proportional to 91,810.32, 126,687.84 and 51,515.76 is: 71,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,810.32 : 126,687.84 = 51,515.76 : x
  2. Step 2: Convert to fraction form
    91,810.32/126,687.84 = 51,515.76/x
  3. Step 3: Cross multiply
    91,810.32x = 126,687.84 × 51,515.76
  4. Step 4: Simplify right side
    91,810.32x = 6,526,420,360.36
  5. Step 5: Solve for x
    x = 6,526,420,360.36/91,810.32
  6. Step 6: Final answer
    x = 71,085.91

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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.