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Finding the Fourth Proportional to 72,973.65, 109,247.22 and 65,969.78

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Solution

The fourth proportional to 72,973.65, 109,247.22 and 65,969.78 is: 98,761.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.65 : 109,247.22 = 65,969.78 : x
  2. Step 2: Convert to fraction form
    72,973.65/109,247.22 = 65,969.78/x
  3. Step 3: Cross multiply
    72,973.65x = 109,247.22 × 65,969.78
  4. Step 4: Simplify right side
    72,973.65x = 7,207,015,342.13
  5. Step 5: Solve for x
    x = 7,207,015,342.13/72,973.65
  6. Step 6: Final answer
    x = 98,761.89

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1.5x scale

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.