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Finding the Fourth Proportional to 91,737.72, 126,426.60 and 71,562.60

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Solution

The fourth proportional to 91,737.72, 126,426.60 and 71,562.60 is: 98,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,737.72 : 126,426.60 = 71,562.60 : x
  2. Step 2: Convert to fraction form
    91,737.72/126,426.60 = 71,562.60/x
  3. Step 3: Cross multiply
    91,737.72x = 126,426.60 × 71,562.60
  4. Step 4: Simplify right side
    91,737.72x = 9,047,416,205.16
  5. Step 5: Solve for x
    x = 9,047,416,205.16/91,737.72
  6. Step 6: Final answer
    x = 98,622.64

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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.