Home / 86,811.80-130,083-60,209.72

Finding the Fourth Proportional to 86,811.80, 130,083 and 60,209.72

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Solution

The fourth proportional to 86,811.80, 130,083 and 60,209.72 is: 90,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811.80 : 130,083 = 60,209.72 : x
  2. Step 2: Convert to fraction form
    86,811.80/130,083 = 60,209.72/x
  3. Step 3: Cross multiply
    86,811.80x = 130,083 × 60,209.72
  4. Step 4: Simplify right side
    86,811.80x = 7,832,261,006.76
  5. Step 5: Solve for x
    x = 7,832,261,006.76/86,811.80
  6. Step 6: Final answer
    x = 90,221.16

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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.