Home / 86,689.26-130,137.60-51,645.42

Finding the Fourth Proportional to 86,689.26, 130,137.60 and 51,645.42

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Solution

The fourth proportional to 86,689.26, 130,137.60 and 51,645.42 is: 77,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,689.26 : 130,137.60 = 51,645.42 : x
  2. Step 2: Convert to fraction form
    86,689.26/130,137.60 = 51,645.42/x
  3. Step 3: Cross multiply
    86,689.26x = 130,137.60 × 51,645.42
  4. Step 4: Simplify right side
    86,689.26x = 6,721,011,009.79
  5. Step 5: Solve for x
    x = 6,721,011,009.79/86,689.26
  6. Step 6: Final answer
    x = 77,529.92

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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.