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Finding the Fourth Proportional to 60,551.84, 90,825.60 and 21,108.80

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Solution

The fourth proportional to 60,551.84, 90,825.60 and 21,108.80 is: 31,662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,551.84 : 90,825.60 = 21,108.80 : x
  2. Step 2: Convert to fraction form
    60,551.84/90,825.60 = 21,108.80/x
  3. Step 3: Cross multiply
    60,551.84x = 90,825.60 × 21,108.80
  4. Step 4: Simplify right side
    60,551.84x = 1,917,219,425.28
  5. Step 5: Solve for x
    x = 1,917,219,425.28/60,551.84
  6. Step 6: Final answer
    x = 31,662.45

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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.