Home / 84,938.72-127,414.08-25,779.20

Finding the Fourth Proportional to 84,938.72, 127,414.08 and 25,779.20

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Solution

The fourth proportional to 84,938.72, 127,414.08 and 25,779.20 is: 38,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,938.72 : 127,414.08 = 25,779.20 : x
  2. Step 2: Convert to fraction form
    84,938.72/127,414.08 = 25,779.20/x
  3. Step 3: Cross multiply
    84,938.72x = 127,414.08 × 25,779.20
  4. Step 4: Simplify right side
    84,938.72x = 3,284,633,051.14
  5. Step 5: Solve for x
    x = 3,284,633,051.14/84,938.72
  6. Step 6: Final answer
    x = 38,670.62

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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.