Home / 78,749.24-108,671.57-42,939.95

Finding the Fourth Proportional to 78,749.24, 108,671.57 and 42,939.95

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Solution

The fourth proportional to 78,749.24, 108,671.57 and 42,939.95 is: 59,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749.24 : 108,671.57 = 42,939.95 : x
  2. Step 2: Convert to fraction form
    78,749.24/108,671.57 = 42,939.95/x
  3. Step 3: Cross multiply
    78,749.24x = 108,671.57 × 42,939.95
  4. Step 4: Simplify right side
    78,749.24x = 4,666,351,024.16
  5. Step 5: Solve for x
    x = 4,666,351,024.16/78,749.24
  6. Step 6: Final answer
    x = 59,255.83

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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.