Home / 78,176.71-107,883.96-42,366.43

Finding the Fourth Proportional to 78,176.71, 107,883.96 and 42,366.43

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Solution

The fourth proportional to 78,176.71, 107,883.96 and 42,366.43 is: 58,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,176.71 : 107,883.96 = 42,366.43 : x
  2. Step 2: Convert to fraction form
    78,176.71/107,883.96 = 42,366.43/x
  3. Step 3: Cross multiply
    78,176.71x = 107,883.96 × 42,366.43
  4. Step 4: Simplify right side
    78,176.71x = 4,570,658,239.46
  5. Step 5: Solve for x
    x = 4,570,658,239.46/78,176.71
  6. Step 6: Final answer
    x = 58,465.73

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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.