Home / 76,869.42-115,310.10-29,507.28

Finding the Fourth Proportional to 76,869.42, 115,310.10 and 29,507.28

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Solution

The fourth proportional to 76,869.42, 115,310.10 and 29,507.28 is: 44,263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,869.42 : 115,310.10 = 29,507.28 : x
  2. Step 2: Convert to fraction form
    76,869.42/115,310.10 = 29,507.28/x
  3. Step 3: Cross multiply
    76,869.42x = 115,310.10 × 29,507.28
  4. Step 4: Simplify right side
    76,869.42x = 3,402,487,407.53
  5. Step 5: Solve for x
    x = 3,402,487,407.53/76,869.42
  6. Step 6: Final answer
    x = 44,263.21

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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.