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Finding the Fourth Proportional to 77,084.40, 106,253.40 and 62,912.88

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Solution

The fourth proportional to 77,084.40, 106,253.40 and 62,912.88 is: 86,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,084.40 : 106,253.40 = 62,912.88 : x
  2. Step 2: Convert to fraction form
    77,084.40/106,253.40 = 62,912.88/x
  3. Step 3: Cross multiply
    77,084.40x = 106,253.40 × 62,912.88
  4. Step 4: Simplify right side
    77,084.40x = 6,684,707,403.79
  5. Step 5: Solve for x
    x = 6,684,707,403.79/77,084.40
  6. Step 6: Final answer
    x = 86,719.33

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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.