Home / 76,987.52-115,588.68-39,579.32

Finding the Fourth Proportional to 76,987.52, 115,588.68 and 39,579.32

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Solution

The fourth proportional to 76,987.52, 115,588.68 and 39,579.32 is: 59,424.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,987.52 : 115,588.68 = 39,579.32 : x
  2. Step 2: Convert to fraction form
    76,987.52/115,588.68 = 39,579.32/x
  3. Step 3: Cross multiply
    76,987.52x = 115,588.68 × 39,579.32
  4. Step 4: Simplify right side
    76,987.52x = 4,574,921,354.10
  5. Step 5: Solve for x
    x = 4,574,921,354.10/76,987.52
  6. Step 6: Final answer
    x = 59,424.19

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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.