Home / 81,317.34-121,987.35-36,955.26

Finding the Fourth Proportional to 81,317.34, 121,987.35 and 36,955.26

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Solution

The fourth proportional to 81,317.34, 121,987.35 and 36,955.26 is: 55,438.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,317.34 : 121,987.35 = 36,955.26 : x
  2. Step 2: Convert to fraction form
    81,317.34/121,987.35 = 36,955.26/x
  3. Step 3: Cross multiply
    81,317.34x = 121,987.35 × 36,955.26
  4. Step 4: Simplify right side
    81,317.34x = 4,508,074,235.96
  5. Step 5: Solve for x
    x = 4,508,074,235.96/81,317.34
  6. Step 6: Final answer
    x = 55,438.04

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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.