Home / 77,712.40-116,540.04-27,779.02

Finding the Fourth Proportional to 77,712.40, 116,540.04 and 27,779.02

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Solution

The fourth proportional to 77,712.40, 116,540.04 and 27,779.02 is: 41,658.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,712.40 : 116,540.04 = 27,779.02 : x
  2. Step 2: Convert to fraction form
    77,712.40/116,540.04 = 27,779.02/x
  3. Step 3: Cross multiply
    77,712.40x = 116,540.04 × 27,779.02
  4. Step 4: Simplify right side
    77,712.40x = 3,237,368,101.96
  5. Step 5: Solve for x
    x = 3,237,368,101.96/77,712.40
  6. Step 6: Final answer
    x = 41,658.32

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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.