Home / 61,121.40-91,263.94-54,755.20

Finding the Fourth Proportional to 61,121.40, 91,263.94 and 54,755.20

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Solution

The fourth proportional to 61,121.40, 91,263.94 and 54,755.20 is: 81,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,121.40 : 91,263.94 = 54,755.20 : x
  2. Step 2: Convert to fraction form
    61,121.40/91,263.94 = 54,755.20/x
  3. Step 3: Cross multiply
    61,121.40x = 91,263.94 × 54,755.20
  4. Step 4: Simplify right side
    61,121.40x = 4,997,175,287.49
  5. Step 5: Solve for x
    x = 4,997,175,287.49/61,121.40
  6. Step 6: Final answer
    x = 81,758.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.