Home / 74,779.52-103,161.28-47,909.12

Finding the Fourth Proportional to 74,779.52, 103,161.28 and 47,909.12

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Solution

The fourth proportional to 74,779.52, 103,161.28 and 47,909.12 is: 66,092.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,779.52 : 103,161.28 = 47,909.12 : x
  2. Step 2: Convert to fraction form
    74,779.52/103,161.28 = 47,909.12/x
  3. Step 3: Cross multiply
    74,779.52x = 103,161.28 × 47,909.12
  4. Step 4: Simplify right side
    74,779.52x = 4,942,366,142.87
  5. Step 5: Solve for x
    x = 4,942,366,142.87/74,779.52
  6. Step 6: Final answer
    x = 66,092.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.