Home / 72,274.95-99,743.85-40,443.21

Finding the Fourth Proportional to 72,274.95, 99,743.85 and 40,443.21

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Solution

The fourth proportional to 72,274.95, 99,743.85 and 40,443.21 is: 55,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,274.95 : 99,743.85 = 40,443.21 : x
  2. Step 2: Convert to fraction form
    72,274.95/99,743.85 = 40,443.21/x
  3. Step 3: Cross multiply
    72,274.95x = 99,743.85 × 40,443.21
  4. Step 4: Simplify right side
    72,274.95x = 4,033,961,471.76
  5. Step 5: Solve for x
    x = 4,033,961,471.76/72,274.95
  6. Step 6: Final answer
    x = 55,814.10

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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.