Home / 87,870.58-121,260.80-47,583.78

Finding the Fourth Proportional to 87,870.58, 121,260.80 and 47,583.78

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Solution

The fourth proportional to 87,870.58, 121,260.80 and 47,583.78 is: 65,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.58 : 121,260.80 = 47,583.78 : x
  2. Step 2: Convert to fraction form
    87,870.58/121,260.80 = 47,583.78/x
  3. Step 3: Cross multiply
    87,870.58x = 121,260.80 × 47,583.78
  4. Step 4: Simplify right side
    87,870.58x = 5,770,047,229.82
  5. Step 5: Solve for x
    x = 5,770,047,229.82/87,870.58
  6. Step 6: Final answer
    x = 65,665.29

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1.5x scale

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.