Home / 61,386.89-91,538.19-53,921.03

Finding the Fourth Proportional to 61,386.89, 91,538.19 and 53,921.03

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Solution

The fourth proportional to 61,386.89, 91,538.19 and 53,921.03 is: 80,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,386.89 : 91,538.19 = 53,921.03 : x
  2. Step 2: Convert to fraction form
    61,386.89/91,538.19 = 53,921.03/x
  3. Step 3: Cross multiply
    61,386.89x = 91,538.19 × 53,921.03
  4. Step 4: Simplify right side
    61,386.89x = 4,935,833,031.44
  5. Step 5: Solve for x
    x = 4,935,833,031.44/61,386.89
  6. Step 6: Final answer
    x = 80,405.33

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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.