Home / 66,669.78-92,003.45-39,848.05

Finding the Fourth Proportional to 66,669.78, 92,003.45 and 39,848.05

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Solution

The fourth proportional to 66,669.78, 92,003.45 and 39,848.05 is: 54,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,669.78 : 92,003.45 = 39,848.05 : x
  2. Step 2: Convert to fraction form
    66,669.78/92,003.45 = 39,848.05/x
  3. Step 3: Cross multiply
    66,669.78x = 92,003.45 × 39,848.05
  4. Step 4: Simplify right side
    66,669.78x = 3,666,157,991.54
  5. Step 5: Solve for x
    x = 3,666,157,991.54/66,669.78
  6. Step 6: Final answer
    x = 54,989.80

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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.