Home / 85,741.61-128,529.45-38,329.88

Finding the Fourth Proportional to 85,741.61, 128,529.45 and 38,329.88

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Solution

The fourth proportional to 85,741.61, 128,529.45 and 38,329.88 is: 57,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,741.61 : 128,529.45 = 38,329.88 : x
  2. Step 2: Convert to fraction form
    85,741.61/128,529.45 = 38,329.88/x
  3. Step 3: Cross multiply
    85,741.61x = 128,529.45 × 38,329.88
  4. Step 4: Simplify right side
    85,741.61x = 4,926,517,752.32
  5. Step 5: Solve for x
    x = 4,926,517,752.32/85,741.61
  6. Step 6: Final answer
    x = 57,457.73

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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.