Home / 55,831.36-77,046.70-30,680.32

Finding the Fourth Proportional to 55,831.36, 77,046.70 and 30,680.32

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Solution

The fourth proportional to 55,831.36, 77,046.70 and 30,680.32 is: 42,338.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,831.36 : 77,046.70 = 30,680.32 : x
  2. Step 2: Convert to fraction form
    55,831.36/77,046.70 = 30,680.32/x
  3. Step 3: Cross multiply
    55,831.36x = 77,046.70 × 30,680.32
  4. Step 4: Simplify right side
    55,831.36x = 2,363,817,410.94
  5. Step 5: Solve for x
    x = 2,363,817,410.94/55,831.36
  6. Step 6: Final answer
    x = 42,338.52

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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.