Home / 75,220.34-103,567.29-57,257.78

Finding the Fourth Proportional to 75,220.34, 103,567.29 and 57,257.78

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Solution

The fourth proportional to 75,220.34, 103,567.29 and 57,257.78 is: 78,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,220.34 : 103,567.29 = 57,257.78 : x
  2. Step 2: Convert to fraction form
    75,220.34/103,567.29 = 57,257.78/x
  3. Step 3: Cross multiply
    75,220.34x = 103,567.29 × 57,257.78
  4. Step 4: Simplify right side
    75,220.34x = 5,930,033,106.02
  5. Step 5: Solve for x
    x = 5,930,033,106.02/75,220.34
  6. Step 6: Final answer
    x = 78,835.50

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1.5x scale

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.