Home / 72,206.31-99,644.94-40,382.76

Finding the Fourth Proportional to 72,206.31, 99,644.94 and 40,382.76

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Solution

The fourth proportional to 72,206.31, 99,644.94 and 40,382.76 is: 55,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.31 : 99,644.94 = 40,382.76 : x
  2. Step 2: Convert to fraction form
    72,206.31/99,644.94 = 40,382.76/x
  3. Step 3: Cross multiply
    72,206.31x = 99,644.94 × 40,382.76
  4. Step 4: Simplify right side
    72,206.31x = 4,023,937,697.23
  5. Step 5: Solve for x
    x = 4,023,937,697.23/72,206.31
  6. Step 6: Final answer
    x = 55,728.34

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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.