Home / 72,037.84-99,403.86-40,205.66

Finding the Fourth Proportional to 72,037.84, 99,403.86 and 40,205.66

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Solution

The fourth proportional to 72,037.84, 99,403.86 and 40,205.66 is: 55,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,037.84 : 99,403.86 = 40,205.66 : x
  2. Step 2: Convert to fraction form
    72,037.84/99,403.86 = 40,205.66/x
  3. Step 3: Cross multiply
    72,037.84x = 99,403.86 × 40,205.66
  4. Step 4: Simplify right side
    72,037.84x = 3,996,597,797.85
  5. Step 5: Solve for x
    x = 3,996,597,797.85/72,037.84
  6. Step 6: Final answer
    x = 55,479.15

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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.