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Finding the Fourth Proportional to 91,633.60, 126,515.32 and 70,374.88

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Solution

The fourth proportional to 91,633.60, 126,515.32 and 70,374.88 is: 97,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,633.60 : 126,515.32 = 70,374.88 : x
  2. Step 2: Convert to fraction form
    91,633.60/126,515.32 = 70,374.88/x
  3. Step 3: Cross multiply
    91,633.60x = 126,515.32 × 70,374.88
  4. Step 4: Simplify right side
    91,633.60x = 8,903,500,463.16
  5. Step 5: Solve for x
    x = 8,903,500,463.16/91,633.60
  6. Step 6: Final answer
    x = 97,164.15

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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.