Home / 85,909.65-128,833.58-29,734.50

Finding the Fourth Proportional to 85,909.65, 128,833.58 and 29,734.50

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Solution

The fourth proportional to 85,909.65, 128,833.58 and 29,734.50 is: 44,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,909.65 : 128,833.58 = 29,734.50 : x
  2. Step 2: Convert to fraction form
    85,909.65/128,833.58 = 29,734.50/x
  3. Step 3: Cross multiply
    85,909.65x = 128,833.58 × 29,734.50
  4. Step 4: Simplify right side
    85,909.65x = 3,830,801,935.84
  5. Step 5: Solve for x
    x = 3,830,801,935.84/85,909.65
  6. Step 6: Final answer
    x = 44,591.06

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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.