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Finding the Fourth Proportional to 72,690.66, 109,050.63 and 25,942.32

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Solution

The fourth proportional to 72,690.66, 109,050.63 and 25,942.32 is: 38,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,690.66 : 109,050.63 = 25,942.32 : x
  2. Step 2: Convert to fraction form
    72,690.66/109,050.63 = 25,942.32/x
  3. Step 3: Cross multiply
    72,690.66x = 109,050.63 × 25,942.32
  4. Step 4: Simplify right side
    72,690.66x = 2,829,026,339.66
  5. Step 5: Solve for x
    x = 2,829,026,339.66/72,690.66
  6. Step 6: Final answer
    x = 38,918.70

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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.