Home / 55,130.59-76,077.91-31,258.87

Finding the Fourth Proportional to 55,130.59, 76,077.91 and 31,258.87

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Solution

The fourth proportional to 55,130.59, 76,077.91 and 31,258.87 is: 43,135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,130.59 : 76,077.91 = 31,258.87 : x
  2. Step 2: Convert to fraction form
    55,130.59/76,077.91 = 31,258.87/x
  3. Step 3: Cross multiply
    55,130.59x = 76,077.91 × 31,258.87
  4. Step 4: Simplify right side
    55,130.59x = 2,378,109,342.27
  5. Step 5: Solve for x
    x = 2,378,109,342.27/55,130.59
  6. Step 6: Final answer
    x = 43,135.94

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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.