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Finding the Fourth Proportional to 88,449.40, 121,931.22 and 67,191.76

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Solution

The fourth proportional to 88,449.40, 121,931.22 and 67,191.76 is: 92,626.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,449.40 : 121,931.22 = 67,191.76 : x
  2. Step 2: Convert to fraction form
    88,449.40/121,931.22 = 67,191.76/x
  3. Step 3: Cross multiply
    88,449.40x = 121,931.22 × 67,191.76
  4. Step 4: Simplify right side
    88,449.40x = 8,192,773,270.75
  5. Step 5: Solve for x
    x = 8,192,773,270.75/88,449.40
  6. Step 6: Final answer
    x = 92,626.67

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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.