Home / 55,381.32-76,416-31,506.60

Finding the Fourth Proportional to 55,381.32, 76,416 and 31,506.60

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Solution

The fourth proportional to 55,381.32, 76,416 and 31,506.60 is: 43,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,381.32 : 76,416 = 31,506.60 : x
  2. Step 2: Convert to fraction form
    55,381.32/76,416 = 31,506.60/x
  3. Step 3: Cross multiply
    55,381.32x = 76,416 × 31,506.60
  4. Step 4: Simplify right side
    55,381.32x = 2,407,608,345.60
  5. Step 5: Solve for x
    x = 2,407,608,345.60/55,381.32
  6. Step 6: Final answer
    x = 43,473.29

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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.