Home / 91,973.30-126,921.21-54,259.70

Finding the Fourth Proportional to 91,973.30, 126,921.21 and 54,259.70

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Solution

The fourth proportional to 91,973.30, 126,921.21 and 54,259.70 is: 74,877.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,973.30 : 126,921.21 = 54,259.70 : x
  2. Step 2: Convert to fraction form
    91,973.30/126,921.21 = 54,259.70/x
  3. Step 3: Cross multiply
    91,973.30x = 126,921.21 × 54,259.70
  4. Step 4: Simplify right side
    91,973.30x = 6,886,706,778.24
  5. Step 5: Solve for x
    x = 6,886,706,778.24/91,973.30
  6. Step 6: Final answer
    x = 74,877.24

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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.