Home / 72,135.18-99,544.71-40,304.34

Finding the Fourth Proportional to 72,135.18, 99,544.71 and 40,304.34

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Solution

The fourth proportional to 72,135.18, 99,544.71 and 40,304.34 is: 55,618.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.18 : 99,544.71 = 40,304.34 : x
  2. Step 2: Convert to fraction form
    72,135.18/99,544.71 = 40,304.34/x
  3. Step 3: Cross multiply
    72,135.18x = 99,544.71 × 40,304.34
  4. Step 4: Simplify right side
    72,135.18x = 4,012,083,837.04
  5. Step 5: Solve for x
    x = 4,012,083,837.04/72,135.18
  6. Step 6: Final answer
    x = 55,618.96

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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.