Home / 85,987.07-129,030.42-36,062.72

Finding the Fourth Proportional to 85,987.07, 129,030.42 and 36,062.72

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Solution

The fourth proportional to 85,987.07, 129,030.42 and 36,062.72 is: 54,114.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,987.07 : 129,030.42 = 36,062.72 : x
  2. Step 2: Convert to fraction form
    85,987.07/129,030.42 = 36,062.72/x
  3. Step 3: Cross multiply
    85,987.07x = 129,030.42 × 36,062.72
  4. Step 4: Simplify right side
    85,987.07x = 4,653,187,907.94
  5. Step 5: Solve for x
    x = 4,653,187,907.94/85,987.07
  6. Step 6: Final answer
    x = 54,114.97

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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.