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Finding the Fourth Proportional to 66,772.84, 92,208.96 and 42,940.89

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Solution

The fourth proportional to 66,772.84, 92,208.96 and 42,940.89 is: 59,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,772.84 : 92,208.96 = 42,940.89 : x
  2. Step 2: Convert to fraction form
    66,772.84/92,208.96 = 42,940.89/x
  3. Step 3: Cross multiply
    66,772.84x = 92,208.96 × 42,940.89
  4. Step 4: Simplify right side
    66,772.84x = 3,959,534,347.33
  5. Step 5: Solve for x
    x = 3,959,534,347.33/66,772.84
  6. Step 6: Final answer
    x = 59,298.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.