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Finding the Fourth Proportional to 91,366.70, 126,079.08 and 55,551.74

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Solution

The fourth proportional to 91,366.70, 126,079.08 and 55,551.74 is: 76,657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,366.70 : 126,079.08 = 55,551.74 : x
  2. Step 2: Convert to fraction form
    91,366.70/126,079.08 = 55,551.74/x
  3. Step 3: Cross multiply
    91,366.70x = 126,079.08 × 55,551.74
  4. Step 4: Simplify right side
    91,366.70x = 7,003,912,271.60
  5. Step 5: Solve for x
    x = 7,003,912,271.60/91,366.70
  6. Step 6: Final answer
    x = 76,657.17

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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.