Home / 57,221.12-78,915.42-45,263.50

Finding the Fourth Proportional to 57,221.12, 78,915.42 and 45,263.50

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Solution

The fourth proportional to 57,221.12, 78,915.42 and 45,263.50 is: 62,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,221.12 : 78,915.42 = 45,263.50 : x
  2. Step 2: Convert to fraction form
    57,221.12/78,915.42 = 45,263.50/x
  3. Step 3: Cross multiply
    57,221.12x = 78,915.42 × 45,263.50
  4. Step 4: Simplify right side
    57,221.12x = 3,571,987,915.88
  5. Step 5: Solve for x
    x = 3,571,987,915.88/57,221.12
  6. Step 6: Final answer
    x = 62,424.29

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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.