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Finding the Fourth Proportional to 42,656.54, 64,024.07 and 21,611.22

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Solution

The fourth proportional to 42,656.54, 64,024.07 and 21,611.22 is: 32,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,656.54 : 64,024.07 = 21,611.22 : x
  2. Step 2: Convert to fraction form
    42,656.54/64,024.07 = 21,611.22/x
  3. Step 3: Cross multiply
    42,656.54x = 64,024.07 × 21,611.22
  4. Step 4: Simplify right side
    42,656.54x = 1,383,638,262.07
  5. Step 5: Solve for x
    x = 1,383,638,262.07/42,656.54
  6. Step 6: Final answer
    x = 32,436.72

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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.