Home / 85,127.98-117,423.39-61,216.78

Finding the Fourth Proportional to 85,127.98, 117,423.39 and 61,216.78

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Solution

The fourth proportional to 85,127.98, 117,423.39 and 61,216.78 is: 84,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,127.98 : 117,423.39 = 61,216.78 : x
  2. Step 2: Convert to fraction form
    85,127.98/117,423.39 = 61,216.78/x
  3. Step 3: Cross multiply
    85,127.98x = 117,423.39 × 61,216.78
  4. Step 4: Simplify right side
    85,127.98x = 7,188,281,832.48
  5. Step 5: Solve for x
    x = 7,188,281,832.48/85,127.98
  6. Step 6: Final answer
    x = 84,440.88

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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.