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Finding the Fourth Proportional to 60,576.88, 90,839.40 and 21,122.32

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Solution

The fourth proportional to 60,576.88, 90,839.40 and 21,122.32 is: 31,674.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,576.88 : 90,839.40 = 21,122.32 : x
  2. Step 2: Convert to fraction form
    60,576.88/90,839.40 = 21,122.32/x
  3. Step 3: Cross multiply
    60,576.88x = 90,839.40 × 21,122.32
  4. Step 4: Simplify right side
    60,576.88x = 1,918,738,875.41
  5. Step 5: Solve for x
    x = 1,918,738,875.41/60,576.88
  6. Step 6: Final answer
    x = 31,674.44

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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.