Home / 71,967.96-99,316.32-40,138.92

Finding the Fourth Proportional to 71,967.96, 99,316.32 and 40,138.92

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Solution

The fourth proportional to 71,967.96, 99,316.32 and 40,138.92 is: 55,392.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,967.96 : 99,316.32 = 40,138.92 : x
  2. Step 2: Convert to fraction form
    71,967.96/99,316.32 = 40,138.92/x
  3. Step 3: Cross multiply
    71,967.96x = 99,316.32 × 40,138.92
  4. Step 4: Simplify right side
    71,967.96x = 3,986,449,823.17
  5. Step 5: Solve for x
    x = 3,986,449,823.17/71,967.96
  6. Step 6: Final answer
    x = 55,392.01

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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.