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Finding the Fourth Proportional to 91,990.81, 126,948.50 and 51,702.22

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Solution

The fourth proportional to 91,990.81, 126,948.50 and 51,702.22 is: 71,349.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,990.81 : 126,948.50 = 51,702.22 : x
  2. Step 2: Convert to fraction form
    91,990.81/126,948.50 = 51,702.22/x
  3. Step 3: Cross multiply
    91,990.81x = 126,948.50 × 51,702.22
  4. Step 4: Simplify right side
    91,990.81x = 6,563,519,275.67
  5. Step 5: Solve for x
    x = 6,563,519,275.67/91,990.81
  6. Step 6: Final answer
    x = 71,349.73

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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.