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Finding the Fourth Proportional to 78,389.44, 108,174.36 and 46,557.52

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Solution

The fourth proportional to 78,389.44, 108,174.36 and 46,557.52 is: 64,247.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,389.44 : 108,174.36 = 46,557.52 : x
  2. Step 2: Convert to fraction form
    78,389.44/108,174.36 = 46,557.52/x
  3. Step 3: Cross multiply
    78,389.44x = 108,174.36 × 46,557.52
  4. Step 4: Simplify right side
    78,389.44x = 5,036,329,929.19
  5. Step 5: Solve for x
    x = 5,036,329,929.19/78,389.44
  6. Step 6: Final answer
    x = 64,247.56

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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.