Home / 60,724.89-91,100.30-21,284.37

Finding the Fourth Proportional to 60,724.89, 91,100.30 and 21,284.37

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Solution

The fourth proportional to 60,724.89, 91,100.30 and 21,284.37 is: 31,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,724.89 : 91,100.30 = 21,284.37 : x
  2. Step 2: Convert to fraction form
    60,724.89/91,100.30 = 21,284.37/x
  3. Step 3: Cross multiply
    60,724.89x = 91,100.30 × 21,284.37
  4. Step 4: Simplify right side
    60,724.89x = 1,939,012,385.89
  5. Step 5: Solve for x
    x = 1,939,012,385.89/60,724.89
  6. Step 6: Final answer
    x = 31,931.10

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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.