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Finding the Fourth Proportional to 71,158.05, 98,218.76 and 40,964.67

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Solution

The fourth proportional to 71,158.05, 98,218.76 and 40,964.67 is: 56,543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,158.05 : 98,218.76 = 40,964.67 : x
  2. Step 2: Convert to fraction form
    71,158.05/98,218.76 = 40,964.67/x
  3. Step 3: Cross multiply
    71,158.05x = 98,218.76 × 40,964.67
  4. Step 4: Simplify right side
    71,158.05x = 4,023,498,886.39
  5. Step 5: Solve for x
    x = 4,023,498,886.39/71,158.05
  6. Step 6: Final answer
    x = 56,543.13

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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.