Home / 86,923.40-130,385.10-31,512.20

Finding the Fourth Proportional to 86,923.40, 130,385.10 and 31,512.20

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Solution

The fourth proportional to 86,923.40, 130,385.10 and 31,512.20 is: 47,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,923.40 : 130,385.10 = 31,512.20 : x
  2. Step 2: Convert to fraction form
    86,923.40/130,385.10 = 31,512.20/x
  3. Step 3: Cross multiply
    86,923.40x = 130,385.10 × 31,512.20
  4. Step 4: Simplify right side
    86,923.40x = 4,108,721,348.22
  5. Step 5: Solve for x
    x = 4,108,721,348.22/86,923.40
  6. Step 6: Final answer
    x = 47,268.30

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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.