Home / 85,211.90-127,816.65-38,464.70

Finding the Fourth Proportional to 85,211.90, 127,816.65 and 38,464.70

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Solution

The fourth proportional to 85,211.90, 127,816.65 and 38,464.70 is: 57,696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211.90 : 127,816.65 = 38,464.70 : x
  2. Step 2: Convert to fraction form
    85,211.90/127,816.65 = 38,464.70/x
  3. Step 3: Cross multiply
    85,211.90x = 127,816.65 × 38,464.70
  4. Step 4: Simplify right side
    85,211.90x = 4,916,429,097.26
  5. Step 5: Solve for x
    x = 4,916,429,097.26/85,211.90
  6. Step 6: Final answer
    x = 57,696.51

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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.