Home / 87,122.16-130,696.20-30,957.60

Finding the Fourth Proportional to 87,122.16, 130,696.20 and 30,957.60

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Solution

The fourth proportional to 87,122.16, 130,696.20 and 30,957.60 is: 46,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,122.16 : 130,696.20 = 30,957.60 : x
  2. Step 2: Convert to fraction form
    87,122.16/130,696.20 = 30,957.60/x
  3. Step 3: Cross multiply
    87,122.16x = 130,696.20 × 30,957.60
  4. Step 4: Simplify right side
    87,122.16x = 4,046,040,681.12
  5. Step 5: Solve for x
    x = 4,046,040,681.12/87,122.16
  6. Step 6: Final answer
    x = 46,441.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.