Home / 72,202.46-99,639.05-40,371.35

Finding the Fourth Proportional to 72,202.46, 99,639.05 and 40,371.35

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Solution

The fourth proportional to 72,202.46, 99,639.05 and 40,371.35 is: 55,712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,202.46 : 99,639.05 = 40,371.35 : x
  2. Step 2: Convert to fraction form
    72,202.46/99,639.05 = 40,371.35/x
  3. Step 3: Cross multiply
    72,202.46x = 99,639.05 × 40,371.35
  4. Step 4: Simplify right side
    72,202.46x = 4,022,562,261.17
  5. Step 5: Solve for x
    x = 4,022,562,261.17/72,202.46
  6. Step 6: Final answer
    x = 55,712.26

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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.