Home / 81,031.98-121,547.97-21,867.55

Finding the Fourth Proportional to 81,031.98, 121,547.97 and 21,867.55

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Solution

The fourth proportional to 81,031.98, 121,547.97 and 21,867.55 is: 32,801.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,031.98 : 121,547.97 = 21,867.55 : x
  2. Step 2: Convert to fraction form
    81,031.98/121,547.97 = 21,867.55/x
  3. Step 3: Cross multiply
    81,031.98x = 121,547.97 × 21,867.55
  4. Step 4: Simplify right side
    81,031.98x = 2,657,956,202.04
  5. Step 5: Solve for x
    x = 2,657,956,202.04/81,031.98
  6. Step 6: Final answer
    x = 32,801.33

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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.