Home / 72,199.04-99,634.88-40,373.12

Finding the Fourth Proportional to 72,199.04, 99,634.88 and 40,373.12

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Solution

The fourth proportional to 72,199.04, 99,634.88 and 40,373.12 is: 55,715.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,199.04 : 99,634.88 = 40,373.12 : x
  2. Step 2: Convert to fraction form
    72,199.04/99,634.88 = 40,373.12/x
  3. Step 3: Cross multiply
    72,199.04x = 99,634.88 × 40,373.12
  4. Step 4: Simplify right side
    72,199.04x = 4,022,570,966.43
  5. Step 5: Solve for x
    x = 4,022,570,966.43/72,199.04
  6. Step 6: Final answer
    x = 55,715.02

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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.