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Finding the Fourth Proportional to 72,296.75, 99,769.50 and 40,465.65

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Solution

The fourth proportional to 72,296.75, 99,769.50 and 40,465.65 is: 55,842.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,296.75 : 99,769.50 = 40,465.65 : x
  2. Step 2: Convert to fraction form
    72,296.75/99,769.50 = 40,465.65/x
  3. Step 3: Cross multiply
    72,296.75x = 99,769.50 × 40,465.65
  4. Step 4: Simplify right side
    72,296.75x = 4,037,237,647.40
  5. Step 5: Solve for x
    x = 4,037,237,647.40/72,296.75
  6. Step 6: Final answer
    x = 55,842.59

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1.5x scale

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.