Home / 78,821.40-108,772.02-43,010.52

Finding the Fourth Proportional to 78,821.40, 108,772.02 and 43,010.52

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Solution

The fourth proportional to 78,821.40, 108,772.02 and 43,010.52 is: 59,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.40 : 108,772.02 = 43,010.52 : x
  2. Step 2: Convert to fraction form
    78,821.40/108,772.02 = 43,010.52/x
  3. Step 3: Cross multiply
    78,821.40x = 108,772.02 × 43,010.52
  4. Step 4: Simplify right side
    78,821.40x = 4,678,341,141.65
  5. Step 5: Solve for x
    x = 4,678,341,141.65/78,821.40
  6. Step 6: Final answer
    x = 59,353.69

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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.