Home / 78,387.69-108,176.40-44,403.18

Finding the Fourth Proportional to 78,387.69, 108,176.40 and 44,403.18

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Solution

The fourth proportional to 78,387.69, 108,176.40 and 44,403.18 is: 61,277.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,387.69 : 108,176.40 = 44,403.18 : x
  2. Step 2: Convert to fraction form
    78,387.69/108,176.40 = 44,403.18/x
  3. Step 3: Cross multiply
    78,387.69x = 108,176.40 × 44,403.18
  4. Step 4: Simplify right side
    78,387.69x = 4,803,376,160.95
  5. Step 5: Solve for x
    x = 4,803,376,160.95/78,387.69
  6. Step 6: Final answer
    x = 61,277.17

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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.