Home / 75,168.54-103,802.31-56,272.86

Finding the Fourth Proportional to 75,168.54, 103,802.31 and 56,272.86

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Solution

The fourth proportional to 75,168.54, 103,802.31 and 56,272.86 is: 77,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,168.54 : 103,802.31 = 56,272.86 : x
  2. Step 2: Convert to fraction form
    75,168.54/103,802.31 = 56,272.86/x
  3. Step 3: Cross multiply
    75,168.54x = 103,802.31 × 56,272.86
  4. Step 4: Simplify right side
    75,168.54x = 5,841,252,858.31
  5. Step 5: Solve for x
    x = 5,841,252,858.31/75,168.54
  6. Step 6: Final answer
    x = 77,708.74

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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.