Home / 72,052.54-99,428.38-40,223.45

Finding the Fourth Proportional to 72,052.54, 99,428.38 and 40,223.45

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Solution

The fourth proportional to 72,052.54, 99,428.38 and 40,223.45 is: 55,506.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,052.54 : 99,428.38 = 40,223.45 : x
  2. Step 2: Convert to fraction form
    72,052.54/99,428.38 = 40,223.45/x
  3. Step 3: Cross multiply
    72,052.54x = 99,428.38 × 40,223.45
  4. Step 4: Simplify right side
    72,052.54x = 3,999,352,619.52
  5. Step 5: Solve for x
    x = 3,999,352,619.52/72,052.54
  6. Step 6: Final answer
    x = 55,506.06

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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.