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Finding the Fourth Proportional to 83,950.40, 115,815.02 and 48,132.20

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Solution

The fourth proportional to 83,950.40, 115,815.02 and 48,132.20 is: 66,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,950.40 : 115,815.02 = 48,132.20 : x
  2. Step 2: Convert to fraction form
    83,950.40/115,815.02 = 48,132.20/x
  3. Step 3: Cross multiply
    83,950.40x = 115,815.02 × 48,132.20
  4. Step 4: Simplify right side
    83,950.40x = 5,574,431,705.64
  5. Step 5: Solve for x
    x = 5,574,431,705.64/83,950.40
  6. Step 6: Final answer
    x = 66,401.49

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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.