Home / 55,292.56-76,307.40-31,419.28

Finding the Fourth Proportional to 55,292.56, 76,307.40 and 31,419.28

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Solution

The fourth proportional to 55,292.56, 76,307.40 and 31,419.28 is: 43,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,292.56 : 76,307.40 = 31,419.28 : x
  2. Step 2: Convert to fraction form
    55,292.56/76,307.40 = 31,419.28/x
  3. Step 3: Cross multiply
    55,292.56x = 76,307.40 × 31,419.28
  4. Step 4: Simplify right side
    55,292.56x = 2,397,523,566.67
  5. Step 5: Solve for x
    x = 2,397,523,566.67/55,292.56
  6. Step 6: Final answer
    x = 43,360.69

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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.