Home / 55,378.66-76,421.88-31,505.28

Finding the Fourth Proportional to 55,378.66, 76,421.88 and 31,505.28

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Solution

The fourth proportional to 55,378.66, 76,421.88 and 31,505.28 is: 43,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,378.66 : 76,421.88 = 31,505.28 : x
  2. Step 2: Convert to fraction form
    55,378.66/76,421.88 = 31,505.28/x
  3. Step 3: Cross multiply
    55,378.66x = 76,421.88 × 31,505.28
  4. Step 4: Simplify right side
    55,378.66x = 2,407,692,727.53
  5. Step 5: Solve for x
    x = 2,407,692,727.53/55,378.66
  6. Step 6: Final answer
    x = 43,476.90

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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.