Home / 109,780.31-151,496.87-59,479.31

Finding the Fourth Proportional to 109,780.31, 151,496.87 and 59,479.31

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Solution

The fourth proportional to 109,780.31, 151,496.87 and 59,479.31 is: 82,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,780.31 : 151,496.87 = 59,479.31 : x
  2. Step 2: Convert to fraction form
    109,780.31/151,496.87 = 59,479.31/x
  3. Step 3: Cross multiply
    109,780.31x = 151,496.87 × 59,479.31
  4. Step 4: Simplify right side
    109,780.31x = 9,010,929,376.11
  5. Step 5: Solve for x
    x = 9,010,929,376.11/109,780.31
  6. Step 6: Final answer
    x = 82,081.47

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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.