Home / 65,552.16-90,436.32-40,357.92

Finding the Fourth Proportional to 65,552.16, 90,436.32 and 40,357.92

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Solution

The fourth proportional to 65,552.16, 90,436.32 and 40,357.92 is: 55,678.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,552.16 : 90,436.32 = 40,357.92 : x
  2. Step 2: Convert to fraction form
    65,552.16/90,436.32 = 40,357.92/x
  3. Step 3: Cross multiply
    65,552.16x = 90,436.32 × 40,357.92
  4. Step 4: Simplify right side
    65,552.16x = 3,649,821,767.65
  5. Step 5: Solve for x
    x = 3,649,821,767.65/65,552.16
  6. Step 6: Final answer
    x = 55,678.13

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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.