Home / 77,654.18-107,129.04-49,344.68

Finding the Fourth Proportional to 77,654.18, 107,129.04 and 49,344.68

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Solution

The fourth proportional to 77,654.18, 107,129.04 and 49,344.68 is: 68,074.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,654.18 : 107,129.04 = 49,344.68 : x
  2. Step 2: Convert to fraction form
    77,654.18/107,129.04 = 49,344.68/x
  3. Step 3: Cross multiply
    77,654.18x = 107,129.04 × 49,344.68
  4. Step 4: Simplify right side
    77,654.18x = 5,286,248,197.51
  5. Step 5: Solve for x
    x = 5,286,248,197.51/77,654.18
  6. Step 6: Final answer
    x = 68,074.23

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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.