Home / 61,135.40-91,284.82-54,769.28

Finding the Fourth Proportional to 61,135.40, 91,284.82 and 54,769.28

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Solution

The fourth proportional to 61,135.40, 91,284.82 and 54,769.28 is: 81,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,135.40 : 91,284.82 = 54,769.28 : x
  2. Step 2: Convert to fraction form
    61,135.40/91,284.82 = 54,769.28/x
  3. Step 3: Cross multiply
    61,135.40x = 91,284.82 × 54,769.28
  4. Step 4: Simplify right side
    61,135.40x = 4,999,603,866.33
  5. Step 5: Solve for x
    x = 4,999,603,866.33/61,135.40
  6. Step 6: Final answer
    x = 81,779.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.