Home / 78,207.18-107,926.46-42,397.75

Finding the Fourth Proportional to 78,207.18, 107,926.46 and 42,397.75

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Solution

The fourth proportional to 78,207.18, 107,926.46 and 42,397.75 is: 58,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,207.18 : 107,926.46 = 42,397.75 : x
  2. Step 2: Convert to fraction form
    78,207.18/107,926.46 = 42,397.75/x
  3. Step 3: Cross multiply
    78,207.18x = 107,926.46 × 42,397.75
  4. Step 4: Simplify right side
    78,207.18x = 4,575,839,069.47
  5. Step 5: Solve for x
    x = 4,575,839,069.47/78,207.18
  6. Step 6: Final answer
    x = 58,509.19

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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.