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Finding the Fourth Proportional to 60,765.54, 91,157.42 and 21,315.70

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Solution

The fourth proportional to 60,765.54, 91,157.42 and 21,315.70 is: 31,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,765.54 : 91,157.42 = 21,315.70 : x
  2. Step 2: Convert to fraction form
    60,765.54/91,157.42 = 21,315.70/x
  3. Step 3: Cross multiply
    60,765.54x = 91,157.42 × 21,315.70
  4. Step 4: Simplify right side
    60,765.54x = 1,943,084,384.73
  5. Step 5: Solve for x
    x = 1,943,084,384.73/60,765.54
  6. Step 6: Final answer
    x = 31,976.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.