Home / 78,814.38-118,130.85-34,430.70

Finding the Fourth Proportional to 78,814.38, 118,130.85 and 34,430.70

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Solution

The fourth proportional to 78,814.38, 118,130.85 and 34,430.70 is: 51,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.38 : 118,130.85 = 34,430.70 : x
  2. Step 2: Convert to fraction form
    78,814.38/118,130.85 = 34,430.70/x
  3. Step 3: Cross multiply
    78,814.38x = 118,130.85 × 34,430.70
  4. Step 4: Simplify right side
    78,814.38x = 4,067,327,857.10
  5. Step 5: Solve for x
    x = 4,067,327,857.10/78,814.38
  6. Step 6: Final answer
    x = 51,606.42

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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.