Home / 72,149.94-99,565.06-40,319.10

Finding the Fourth Proportional to 72,149.94, 99,565.06 and 40,319.10

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Solution

The fourth proportional to 72,149.94, 99,565.06 and 40,319.10 is: 55,639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.94 : 99,565.06 = 40,319.10 : x
  2. Step 2: Convert to fraction form
    72,149.94/99,565.06 = 40,319.10/x
  3. Step 3: Cross multiply
    72,149.94x = 99,565.06 × 40,319.10
  4. Step 4: Simplify right side
    72,149.94x = 4,014,373,610.65
  5. Step 5: Solve for x
    x = 4,014,373,610.65/72,149.94
  6. Step 6: Final answer
    x = 55,639.32

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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.