Home / 72,019.26-99,393.48-40,191.12

Finding the Fourth Proportional to 72,019.26, 99,393.48 and 40,191.12

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Solution

The fourth proportional to 72,019.26, 99,393.48 and 40,191.12 is: 55,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,019.26 : 99,393.48 = 40,191.12 : x
  2. Step 2: Convert to fraction form
    72,019.26/99,393.48 = 40,191.12/x
  3. Step 3: Cross multiply
    72,019.26x = 99,393.48 × 40,191.12
  4. Step 4: Simplify right side
    72,019.26x = 3,994,735,281.90
  5. Step 5: Solve for x
    x = 3,994,735,281.90/72,019.26
  6. Step 6: Final answer
    x = 55,467.60

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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.