Home / 86,460.09-129,703.55-36,540.40

Finding the Fourth Proportional to 86,460.09, 129,703.55 and 36,540.40

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Solution

The fourth proportional to 86,460.09, 129,703.55 and 36,540.40 is: 54,816.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,460.09 : 129,703.55 = 36,540.40 : x
  2. Step 2: Convert to fraction form
    86,460.09/129,703.55 = 36,540.40/x
  3. Step 3: Cross multiply
    86,460.09x = 129,703.55 × 36,540.40
  4. Step 4: Simplify right side
    86,460.09x = 4,739,419,598.42
  5. Step 5: Solve for x
    x = 4,739,419,598.42/86,460.09
  6. Step 6: Final answer
    x = 54,816.27

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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.