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Finding the Fourth Proportional to 57,920.48, 79,889.04 and 53,155.82

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Solution

The fourth proportional to 57,920.48, 79,889.04 and 53,155.82 is: 73,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,920.48 : 79,889.04 = 53,155.82 : x
  2. Step 2: Convert to fraction form
    57,920.48/79,889.04 = 53,155.82/x
  3. Step 3: Cross multiply
    57,920.48x = 79,889.04 × 53,155.82
  4. Step 4: Simplify right side
    57,920.48x = 4,246,567,430.21
  5. Step 5: Solve for x
    x = 4,246,567,430.21/57,920.48
  6. Step 6: Final answer
    x = 73,317.20

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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.