Home / 85,848.72-128,779.25-22,668.21

Finding the Fourth Proportional to 85,848.72, 128,779.25 and 22,668.21

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Solution

The fourth proportional to 85,848.72, 128,779.25 and 22,668.21 is: 34,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,848.72 : 128,779.25 = 22,668.21 : x
  2. Step 2: Convert to fraction form
    85,848.72/128,779.25 = 22,668.21/x
  3. Step 3: Cross multiply
    85,848.72x = 128,779.25 × 22,668.21
  4. Step 4: Simplify right side
    85,848.72x = 2,919,195,402.03
  5. Step 5: Solve for x
    x = 2,919,195,402.03/85,848.72
  6. Step 6: Final answer
    x = 34,003.95

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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.