Home / 71,686.32-98,943.84-39,867.36

Finding the Fourth Proportional to 71,686.32, 98,943.84 and 39,867.36

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Solution

The fourth proportional to 71,686.32, 98,943.84 and 39,867.36 is: 55,026.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,686.32 : 98,943.84 = 39,867.36 : x
  2. Step 2: Convert to fraction form
    71,686.32/98,943.84 = 39,867.36/x
  3. Step 3: Cross multiply
    71,686.32x = 98,943.84 × 39,867.36
  4. Step 4: Simplify right side
    71,686.32x = 3,944,629,689.06
  5. Step 5: Solve for x
    x = 3,944,629,689.06/71,686.32
  6. Step 6: Final answer
    x = 55,026.25

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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.