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Finding the Fourth Proportional to 57,360, 79,169.45 and 31,875.11

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Solution

The fourth proportional to 57,360, 79,169.45 and 31,875.11 is: 43,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360 : 79,169.45 = 31,875.11 : x
  2. Step 2: Convert to fraction form
    57,360/79,169.45 = 31,875.11/x
  3. Step 3: Cross multiply
    57,360x = 79,169.45 × 31,875.11
  4. Step 4: Simplify right side
    57,360x = 2,523,534,927.39
  5. Step 5: Solve for x
    x = 2,523,534,927.39/57,360
  6. Step 6: Final answer
    x = 43,994.68

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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.