Home / 86,660.24-129,990.40-31,256.24

Finding the Fourth Proportional to 86,660.24, 129,990.40 and 31,256.24

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Solution

The fourth proportional to 86,660.24, 129,990.40 and 31,256.24 is: 46,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.24 : 129,990.40 = 31,256.24 : x
  2. Step 2: Convert to fraction form
    86,660.24/129,990.40 = 31,256.24/x
  3. Step 3: Cross multiply
    86,660.24x = 129,990.40 × 31,256.24
  4. Step 4: Simplify right side
    86,660.24x = 4,063,011,140.10
  5. Step 5: Solve for x
    x = 4,063,011,140.10/86,660.24
  6. Step 6: Final answer
    x = 46,884.37

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1.5x scale

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.