Home / 55,979.32-77,250.54-30,831.16

Finding the Fourth Proportional to 55,979.32, 77,250.54 and 30,831.16

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Solution

The fourth proportional to 55,979.32, 77,250.54 and 30,831.16 is: 42,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,979.32 : 77,250.54 = 30,831.16 : x
  2. Step 2: Convert to fraction form
    55,979.32/77,250.54 = 30,831.16/x
  3. Step 3: Cross multiply
    55,979.32x = 77,250.54 × 30,831.16
  4. Step 4: Simplify right side
    55,979.32x = 2,381,723,758.83
  5. Step 5: Solve for x
    x = 2,381,723,758.83/55,979.32
  6. Step 6: Final answer
    x = 42,546.49

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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.