Home / 78,926.31-108,925.80-43,121.71

Finding the Fourth Proportional to 78,926.31, 108,925.80 and 43,121.71

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Solution

The fourth proportional to 78,926.31, 108,925.80 and 43,121.71 is: 59,512.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,926.31 : 108,925.80 = 43,121.71 : x
  2. Step 2: Convert to fraction form
    78,926.31/108,925.80 = 43,121.71/x
  3. Step 3: Cross multiply
    78,926.31x = 108,925.80 × 43,121.71
  4. Step 4: Simplify right side
    78,926.31x = 4,697,066,759.12
  5. Step 5: Solve for x
    x = 4,697,066,759.12/78,926.31
  6. Step 6: Final answer
    x = 59,512.05

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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.