Home / 86,020.88-129,031.34-26,861.63

Finding the Fourth Proportional to 86,020.88, 129,031.34 and 26,861.63

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Solution

The fourth proportional to 86,020.88, 129,031.34 and 26,861.63 is: 40,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,020.88 : 129,031.34 = 26,861.63 : x
  2. Step 2: Convert to fraction form
    86,020.88/129,031.34 = 26,861.63/x
  3. Step 3: Cross multiply
    86,020.88x = 129,031.34 × 26,861.63
  4. Step 4: Simplify right side
    86,020.88x = 3,465,991,334.02
  5. Step 5: Solve for x
    x = 3,465,991,334.02/86,020.88
  6. Step 6: Final answer
    x = 40,292.44

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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.