Home / 77,180.64-115,681.60-35,540.16

Finding the Fourth Proportional to 77,180.64, 115,681.60 and 35,540.16

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Solution

The fourth proportional to 77,180.64, 115,681.60 and 35,540.16 is: 53,269.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,180.64 : 115,681.60 = 35,540.16 : x
  2. Step 2: Convert to fraction form
    77,180.64/115,681.60 = 35,540.16/x
  3. Step 3: Cross multiply
    77,180.64x = 115,681.60 × 35,540.16
  4. Step 4: Simplify right side
    77,180.64x = 4,111,342,573.06
  5. Step 5: Solve for x
    x = 4,111,342,573.06/77,180.64
  6. Step 6: Final answer
    x = 53,269.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.