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Finding the Fourth Proportional to 60,763.50, 91,140.66 and 21,323.25

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Solution

The fourth proportional to 60,763.50, 91,140.66 and 21,323.25 is: 31,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,763.50 : 91,140.66 = 21,323.25 : x
  2. Step 2: Convert to fraction form
    60,763.50/91,140.66 = 21,323.25/x
  3. Step 3: Cross multiply
    60,763.50x = 91,140.66 × 21,323.25
  4. Step 4: Simplify right side
    60,763.50x = 1,943,415,078.35
  5. Step 5: Solve for x
    x = 1,943,415,078.35/60,763.50
  6. Step 6: Final answer
    x = 31,983.26

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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.