Home / 72,007.20-99,381.60-43,727.40

Finding the Fourth Proportional to 72,007.20, 99,381.60 and 43,727.40

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Solution

The fourth proportional to 72,007.20, 99,381.60 and 43,727.40 is: 60,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,007.20 : 99,381.60 = 43,727.40 : x
  2. Step 2: Convert to fraction form
    72,007.20/99,381.60 = 43,727.40/x
  3. Step 3: Cross multiply
    72,007.20x = 99,381.60 × 43,727.40
  4. Step 4: Simplify right side
    72,007.20x = 4,345,698,975.84
  5. Step 5: Solve for x
    x = 4,345,698,975.84/72,007.20
  6. Step 6: Final answer
    x = 60,350.90

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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.