Home / 85,972.95-128,772.45-52,592.04

Finding the Fourth Proportional to 85,972.95, 128,772.45 and 52,592.04

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Solution

The fourth proportional to 85,972.95, 128,772.45 and 52,592.04 is: 78,773.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,972.95 : 128,772.45 = 52,592.04 : x
  2. Step 2: Convert to fraction form
    85,972.95/128,772.45 = 52,592.04/x
  3. Step 3: Cross multiply
    85,972.95x = 128,772.45 × 52,592.04
  4. Step 4: Simplify right side
    85,972.95x = 6,772,405,841.30
  5. Step 5: Solve for x
    x = 6,772,405,841.30/85,972.95
  6. Step 6: Final answer
    x = 78,773.68

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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.