Home / 86,427.43-129,640.18-22,385.28

Finding the Fourth Proportional to 86,427.43, 129,640.18 and 22,385.28

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Solution

The fourth proportional to 86,427.43, 129,640.18 and 22,385.28 is: 33,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,427.43 : 129,640.18 = 22,385.28 : x
  2. Step 2: Convert to fraction form
    86,427.43/129,640.18 = 22,385.28/x
  3. Step 3: Cross multiply
    86,427.43x = 129,640.18 × 22,385.28
  4. Step 4: Simplify right side
    86,427.43x = 2,902,031,728.55
  5. Step 5: Solve for x
    x = 2,902,031,728.55/86,427.43
  6. Step 6: Final answer
    x = 33,577.67

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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.