Home / 85,535.53-128,419.65-48,121.93

Finding the Fourth Proportional to 85,535.53, 128,419.65 and 48,121.93

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Solution

The fourth proportional to 85,535.53, 128,419.65 and 48,121.93 is: 72,248.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.53 : 128,419.65 = 48,121.93 : x
  2. Step 2: Convert to fraction form
    85,535.53/128,419.65 = 48,121.93/x
  3. Step 3: Cross multiply
    85,535.53x = 128,419.65 × 48,121.93
  4. Step 4: Simplify right side
    85,535.53x = 6,179,801,407.92
  5. Step 5: Solve for x
    x = 6,179,801,407.92/85,535.53
  6. Step 6: Final answer
    x = 72,248.36

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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.