Home / 86,660.19-129,904.16-60,309.57

Finding the Fourth Proportional to 86,660.19, 129,904.16 and 60,309.57

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Solution

The fourth proportional to 86,660.19, 129,904.16 and 60,309.57 is: 90,404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.19 : 129,904.16 = 60,309.57 : x
  2. Step 2: Convert to fraction form
    86,660.19/129,904.16 = 60,309.57/x
  3. Step 3: Cross multiply
    86,660.19x = 129,904.16 × 60,309.57
  4. Step 4: Simplify right side
    86,660.19x = 7,834,464,030.81
  5. Step 5: Solve for x
    x = 7,834,464,030.81/86,660.19
  6. Step 6: Final answer
    x = 90,404.42

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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.