Home / 76,986.52-115,587.18-39,578.32

Finding the Fourth Proportional to 76,986.52, 115,587.18 and 39,578.32

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Solution

The fourth proportional to 76,986.52, 115,587.18 and 39,578.32 is: 59,422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,986.52 : 115,587.18 = 39,578.32 : x
  2. Step 2: Convert to fraction form
    76,986.52/115,587.18 = 39,578.32/x
  3. Step 3: Cross multiply
    76,986.52x = 115,587.18 × 39,578.32
  4. Step 4: Simplify right side
    76,986.52x = 4,574,746,397.94
  5. Step 5: Solve for x
    x = 4,574,746,397.94/76,986.52
  6. Step 6: Final answer
    x = 59,422.69

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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.