Home / 85,823.80-128,772.15-41,427.70

Finding the Fourth Proportional to 85,823.80, 128,772.15 and 41,427.70

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Solution

The fourth proportional to 85,823.80, 128,772.15 and 41,427.70 is: 62,159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,823.80 : 128,772.15 = 41,427.70 : x
  2. Step 2: Convert to fraction form
    85,823.80/128,772.15 = 41,427.70/x
  3. Step 3: Cross multiply
    85,823.80x = 128,772.15 × 41,427.70
  4. Step 4: Simplify right side
    85,823.80x = 5,334,733,998.56
  5. Step 5: Solve for x
    x = 5,334,733,998.56/85,823.80
  6. Step 6: Final answer
    x = 62,159.14

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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.