Home / 78,331.25-108,097.26-42,521.29

Finding the Fourth Proportional to 78,331.25, 108,097.26 and 42,521.29

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Solution

The fourth proportional to 78,331.25, 108,097.26 and 42,521.29 is: 58,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.25 : 108,097.26 = 42,521.29 : x
  2. Step 2: Convert to fraction form
    78,331.25/108,097.26 = 42,521.29/x
  3. Step 3: Cross multiply
    78,331.25x = 108,097.26 × 42,521.29
  4. Step 4: Simplify right side
    78,331.25x = 4,596,434,940.67
  5. Step 5: Solve for x
    x = 4,596,434,940.67/78,331.25
  6. Step 6: Final answer
    x = 58,679.45

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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.