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Finding the Fourth Proportional to 91,686.53, 126,527.74 and 53,472.45

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Solution

The fourth proportional to 91,686.53, 126,527.74 and 53,472.45 is: 73,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,686.53 : 126,527.74 = 53,472.45 : x
  2. Step 2: Convert to fraction form
    91,686.53/126,527.74 = 53,472.45/x
  3. Step 3: Cross multiply
    91,686.53x = 126,527.74 × 53,472.45
  4. Step 4: Simplify right side
    91,686.53x = 6,765,748,591.56
  5. Step 5: Solve for x
    x = 6,765,748,591.56/91,686.53
  6. Step 6: Final answer
    x = 73,792.17

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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.