Home / 88,711.16-122,213.44-61,805

Finding the Fourth Proportional to 88,711.16, 122,213.44 and 61,805

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Solution

The fourth proportional to 88,711.16, 122,213.44 and 61,805 is: 85,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,711.16 : 122,213.44 = 61,805 : x
  2. Step 2: Convert to fraction form
    88,711.16/122,213.44 = 61,805/x
  3. Step 3: Cross multiply
    88,711.16x = 122,213.44 × 61,805
  4. Step 4: Simplify right side
    88,711.16x = 7,553,401,659.20
  5. Step 5: Solve for x
    x = 7,553,401,659.20/88,711.16
  6. Step 6: Final answer
    x = 85,146.01

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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.