Home / 76,338.64-105,348.36-57,184.48

Finding the Fourth Proportional to 76,338.64, 105,348.36 and 57,184.48

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Solution

The fourth proportional to 76,338.64, 105,348.36 and 57,184.48 is: 78,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,338.64 : 105,348.36 = 57,184.48 : x
  2. Step 2: Convert to fraction form
    76,338.64/105,348.36 = 57,184.48/x
  3. Step 3: Cross multiply
    76,338.64x = 105,348.36 × 57,184.48
  4. Step 4: Simplify right side
    76,338.64x = 6,024,291,185.45
  5. Step 5: Solve for x
    x = 6,024,291,185.45/76,338.64
  6. Step 6: Final answer
    x = 78,915.36

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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.