Home / 72,223.19-99,670.98-39,957.30

Finding the Fourth Proportional to 72,223.19, 99,670.98 and 39,957.30

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Solution

The fourth proportional to 72,223.19, 99,670.98 and 39,957.30 is: 55,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,223.19 : 99,670.98 = 39,957.30 : x
  2. Step 2: Convert to fraction form
    72,223.19/99,670.98 = 39,957.30/x
  3. Step 3: Cross multiply
    72,223.19x = 99,670.98 × 39,957.30
  4. Step 4: Simplify right side
    72,223.19x = 3,982,582,551.01
  5. Step 5: Solve for x
    x = 3,982,582,551.01/72,223.19
  6. Step 6: Final answer
    x = 55,142.71

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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.