Home / 86,206.20-129,368.76-30,046.77

Finding the Fourth Proportional to 86,206.20, 129,368.76 and 30,046.77

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Solution

The fourth proportional to 86,206.20, 129,368.76 and 30,046.77 is: 45,090.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206.20 : 129,368.76 = 30,046.77 : x
  2. Step 2: Convert to fraction form
    86,206.20/129,368.76 = 30,046.77/x
  3. Step 3: Cross multiply
    86,206.20x = 129,368.76 × 30,046.77
  4. Step 4: Simplify right side
    86,206.20x = 3,887,113,670.33
  5. Step 5: Solve for x
    x = 3,887,113,670.33/86,206.20
  6. Step 6: Final answer
    x = 45,090.88

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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.