Home / 78,306.19-108,062.62-42,496.21

Finding the Fourth Proportional to 78,306.19, 108,062.62 and 42,496.21

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Solution

The fourth proportional to 78,306.19, 108,062.62 and 42,496.21 is: 58,644.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,306.19 : 108,062.62 = 42,496.21 : x
  2. Step 2: Convert to fraction form
    78,306.19/108,062.62 = 42,496.21/x
  3. Step 3: Cross multiply
    78,306.19x = 108,062.62 × 42,496.21
  4. Step 4: Simplify right side
    78,306.19x = 4,592,251,821.51
  5. Step 5: Solve for x
    x = 4,592,251,821.51/78,306.19
  6. Step 6: Final answer
    x = 58,644.81

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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.