Home / 89,840.16-123,963.12-55,857.60

Finding the Fourth Proportional to 89,840.16, 123,963.12 and 55,857.60

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Solution

The fourth proportional to 89,840.16, 123,963.12 and 55,857.60 is: 77,073.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,840.16 : 123,963.12 = 55,857.60 : x
  2. Step 2: Convert to fraction form
    89,840.16/123,963.12 = 55,857.60/x
  3. Step 3: Cross multiply
    89,840.16x = 123,963.12 × 55,857.60
  4. Step 4: Simplify right side
    89,840.16x = 6,924,282,371.71
  5. Step 5: Solve for x
    x = 6,924,282,371.71/89,840.16
  6. Step 6: Final answer
    x = 77,073.35

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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.