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Finding the Fourth Proportional to 72,003.80, 99,339 and 44,778.08

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Solution

The fourth proportional to 72,003.80, 99,339 and 44,778.08 is: 61,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.80 : 99,339 = 44,778.08 : x
  2. Step 2: Convert to fraction form
    72,003.80/99,339 = 44,778.08/x
  3. Step 3: Cross multiply
    72,003.80x = 99,339 × 44,778.08
  4. Step 4: Simplify right side
    72,003.80x = 4,448,209,689.12
  5. Step 5: Solve for x
    x = 4,448,209,689.12/72,003.80
  6. Step 6: Final answer
    x = 61,777.43

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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.