Home / 89,943.08-124,121.40-49,656.80

Finding the Fourth Proportional to 89,943.08, 124,121.40 and 49,656.80

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Solution

The fourth proportional to 89,943.08, 124,121.40 and 49,656.80 is: 68,526.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,943.08 : 124,121.40 = 49,656.80 : x
  2. Step 2: Convert to fraction form
    89,943.08/124,121.40 = 49,656.80/x
  3. Step 3: Cross multiply
    89,943.08x = 124,121.40 × 49,656.80
  4. Step 4: Simplify right side
    89,943.08x = 6,163,471,535.52
  5. Step 5: Solve for x
    x = 6,163,471,535.52/89,943.08
  6. Step 6: Final answer
    x = 68,526.36

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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.