Home / 61,316.90-84,647.94-40,128.54

Finding the Fourth Proportional to 61,316.90, 84,647.94 and 40,128.54

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Solution

The fourth proportional to 61,316.90, 84,647.94 and 40,128.54 is: 55,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,316.90 : 84,647.94 = 40,128.54 : x
  2. Step 2: Convert to fraction form
    61,316.90/84,647.94 = 40,128.54/x
  3. Step 3: Cross multiply
    61,316.90x = 84,647.94 × 40,128.54
  4. Step 4: Simplify right side
    61,316.90x = 3,396,798,246.21
  5. Step 5: Solve for x
    x = 3,396,798,246.21/61,316.90
  6. Step 6: Final answer
    x = 55,397.42

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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.