Home / 92,795.78-128,061.02-54,548.31

Finding the Fourth Proportional to 92,795.78, 128,061.02 and 54,548.31

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Solution

The fourth proportional to 92,795.78, 128,061.02 and 54,548.31 is: 75,278.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,795.78 : 128,061.02 = 54,548.31 : x
  2. Step 2: Convert to fraction form
    92,795.78/128,061.02 = 54,548.31/x
  3. Step 3: Cross multiply
    92,795.78x = 128,061.02 × 54,548.31
  4. Step 4: Simplify right side
    92,795.78x = 6,985,511,945.13
  5. Step 5: Solve for x
    x = 6,985,511,945.13/92,795.78
  6. Step 6: Final answer
    x = 75,278.34

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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.