Home / 78,285.75-108,031.18-42,474.39

Finding the Fourth Proportional to 78,285.75, 108,031.18 and 42,474.39

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Solution

The fourth proportional to 78,285.75, 108,031.18 and 42,474.39 is: 58,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,285.75 : 108,031.18 = 42,474.39 : x
  2. Step 2: Convert to fraction form
    78,285.75/108,031.18 = 42,474.39/x
  3. Step 3: Cross multiply
    78,285.75x = 108,031.18 × 42,474.39
  4. Step 4: Simplify right side
    78,285.75x = 4,588,558,471.48
  5. Step 5: Solve for x
    x = 4,588,558,471.48/78,285.75
  6. Step 6: Final answer
    x = 58,612.95

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1.5x scale

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.