Home / 115,579.10-159,478.88-64,575.53

Finding the Fourth Proportional to 115,579.10, 159,478.88 and 64,575.53

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Solution

The fourth proportional to 115,579.10, 159,478.88 and 64,575.53 is: 89,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,579.10 : 159,478.88 = 64,575.53 : x
  2. Step 2: Convert to fraction form
    115,579.10/159,478.88 = 64,575.53/x
  3. Step 3: Cross multiply
    115,579.10x = 159,478.88 × 64,575.53
  4. Step 4: Simplify right side
    115,579.10x = 10,298,432,677.58
  5. Step 5: Solve for x
    x = 10,298,432,677.58/115,579.10
  6. Step 6: Final answer
    x = 89,102.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.