Home / 72,017.66-99,374.46-40,180.40

Finding the Fourth Proportional to 72,017.66, 99,374.46 and 40,180.40

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Solution

The fourth proportional to 72,017.66, 99,374.46 and 40,180.40 is: 55,443.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.66 : 99,374.46 = 40,180.40 : x
  2. Step 2: Convert to fraction form
    72,017.66/99,374.46 = 40,180.40/x
  3. Step 3: Cross multiply
    72,017.66x = 99,374.46 × 40,180.40
  4. Step 4: Simplify right side
    72,017.66x = 3,992,905,552.58
  5. Step 5: Solve for x
    x = 3,992,905,552.58/72,017.66
  6. Step 6: Final answer
    x = 55,443.42

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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.