Home / 72,025.08-99,399.60-40,200.18

Finding the Fourth Proportional to 72,025.08, 99,399.60 and 40,200.18

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Solution

The fourth proportional to 72,025.08, 99,399.60 and 40,200.18 is: 55,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,025.08 : 99,399.60 = 40,200.18 : x
  2. Step 2: Convert to fraction form
    72,025.08/99,399.60 = 40,200.18/x
  3. Step 3: Cross multiply
    72,025.08x = 99,399.60 × 40,200.18
  4. Step 4: Simplify right side
    72,025.08x = 3,995,881,811.93
  5. Step 5: Solve for x
    x = 3,995,881,811.93/72,025.08
  6. Step 6: Final answer
    x = 55,479.03

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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.