Home / 86,261.32-129,391.90-38,820.96

Finding the Fourth Proportional to 86,261.32, 129,391.90 and 38,820.96

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Solution

The fourth proportional to 86,261.32, 129,391.90 and 38,820.96 is: 58,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,261.32 : 129,391.90 = 38,820.96 : x
  2. Step 2: Convert to fraction form
    86,261.32/129,391.90 = 38,820.96/x
  3. Step 3: Cross multiply
    86,261.32x = 129,391.90 × 38,820.96
  4. Step 4: Simplify right side
    86,261.32x = 5,023,117,774.22
  5. Step 5: Solve for x
    x = 5,023,117,774.22/86,261.32
  6. Step 6: Final answer
    x = 58,231.40

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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.