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Finding the Fourth Proportional to 72,208.69, 99,652.59 and 40,377.58

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Solution

The fourth proportional to 72,208.69, 99,652.59 and 40,377.58 is: 55,723.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,208.69 : 99,652.59 = 40,377.58 : x
  2. Step 2: Convert to fraction form
    72,208.69/99,652.59 = 40,377.58/x
  3. Step 3: Cross multiply
    72,208.69x = 99,652.59 × 40,377.58
  4. Step 4: Simplify right side
    72,208.69x = 4,023,730,424.93
  5. Step 5: Solve for x
    x = 4,023,730,424.93/72,208.69
  6. Step 6: Final answer
    x = 55,723.63

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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.