Home / 87,017.80-130,541.10-37,121.80

Finding the Fourth Proportional to 87,017.80, 130,541.10 and 37,121.80

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Solution

The fourth proportional to 87,017.80, 130,541.10 and 37,121.80 is: 55,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,017.80 : 130,541.10 = 37,121.80 : x
  2. Step 2: Convert to fraction form
    87,017.80/130,541.10 = 37,121.80/x
  3. Step 3: Cross multiply
    87,017.80x = 130,541.10 × 37,121.80
  4. Step 4: Simplify right side
    87,017.80x = 4,845,920,605.98
  5. Step 5: Solve for x
    x = 4,845,920,605.98/87,017.80
  6. Step 6: Final answer
    x = 55,688.84

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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.