Home / 61,316.65-84,647.60-40,128.28

Finding the Fourth Proportional to 61,316.65, 84,647.60 and 40,128.28

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Solution

The fourth proportional to 61,316.65, 84,647.60 and 40,128.28 is: 55,397.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,316.65 : 84,647.60 = 40,128.28 : x
  2. Step 2: Convert to fraction form
    61,316.65/84,647.60 = 40,128.28/x
  3. Step 3: Cross multiply
    61,316.65x = 84,647.60 × 40,128.28
  4. Step 4: Simplify right side
    61,316.65x = 3,396,762,393.49
  5. Step 5: Solve for x
    x = 3,396,762,393.49/61,316.65
  6. Step 6: Final answer
    x = 55,397.06

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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.