Home / 78,390.24-108,179.33-42,580.95

Finding the Fourth Proportional to 78,390.24, 108,179.33 and 42,580.95

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Solution

The fourth proportional to 78,390.24, 108,179.33 and 42,580.95 is: 58,762.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,390.24 : 108,179.33 = 42,580.95 : x
  2. Step 2: Convert to fraction form
    78,390.24/108,179.33 = 42,580.95/x
  3. Step 3: Cross multiply
    78,390.24x = 108,179.33 × 42,580.95
  4. Step 4: Simplify right side
    78,390.24x = 4,606,378,641.76
  5. Step 5: Solve for x
    x = 4,606,378,641.76/78,390.24
  6. Step 6: Final answer
    x = 58,762.14

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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.