Home / 77,853.18-116,779.86-21,693.42

Finding the Fourth Proportional to 77,853.18, 116,779.86 and 21,693.42

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Solution

The fourth proportional to 77,853.18, 116,779.86 and 21,693.42 is: 32,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,853.18 : 116,779.86 = 21,693.42 : x
  2. Step 2: Convert to fraction form
    77,853.18/116,779.86 = 21,693.42/x
  3. Step 3: Cross multiply
    77,853.18x = 116,779.86 × 21,693.42
  4. Step 4: Simplify right side
    77,853.18x = 2,533,354,550.52
  5. Step 5: Solve for x
    x = 2,533,354,550.52/77,853.18
  6. Step 6: Final answer
    x = 32,540.16

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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.