Home / 55,127.80-76,119.21-42,360.86

Finding the Fourth Proportional to 55,127.80, 76,119.21 and 42,360.86

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Solution

The fourth proportional to 55,127.80, 76,119.21 and 42,360.86 is: 58,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,127.80 : 76,119.21 = 42,360.86 : x
  2. Step 2: Convert to fraction form
    55,127.80/76,119.21 = 42,360.86/x
  3. Step 3: Cross multiply
    55,127.80x = 76,119.21 × 42,360.86
  4. Step 4: Simplify right side
    55,127.80x = 3,224,474,960.25
  5. Step 5: Solve for x
    x = 3,224,474,960.25/55,127.80
  6. Step 6: Final answer
    x = 58,490.91

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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.