Home / 72,017.10-99,388.62-40,186.53

Finding the Fourth Proportional to 72,017.10, 99,388.62 and 40,186.53

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Solution

The fourth proportional to 72,017.10, 99,388.62 and 40,186.53 is: 55,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.10 : 99,388.62 = 40,186.53 : x
  2. Step 2: Convert to fraction form
    72,017.10/99,388.62 = 40,186.53/x
  3. Step 3: Cross multiply
    72,017.10x = 99,388.62 × 40,186.53
  4. Step 4: Simplify right side
    72,017.10x = 3,994,083,759.29
  5. Step 5: Solve for x
    x = 3,994,083,759.29/72,017.10
  6. Step 6: Final answer
    x = 55,460.21

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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.