Home / 55,831.80-77,047.01-30,680.76

Finding the Fourth Proportional to 55,831.80, 77,047.01 and 30,680.76

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Solution

The fourth proportional to 55,831.80, 77,047.01 and 30,680.76 is: 42,338.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,831.80 : 77,047.01 = 30,680.76 : x
  2. Step 2: Convert to fraction form
    55,831.80/77,047.01 = 30,680.76/x
  3. Step 3: Cross multiply
    55,831.80x = 77,047.01 × 30,680.76
  4. Step 4: Simplify right side
    55,831.80x = 2,363,860,822.53
  5. Step 5: Solve for x
    x = 2,363,860,822.53/55,831.80
  6. Step 6: Final answer
    x = 42,338.97

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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.