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Finding the Fourth Proportional to 142,391.54, 213,579.91 and 42,552.54

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Solution

The fourth proportional to 142,391.54, 213,579.91 and 42,552.54 is: 63,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,391.54 : 213,579.91 = 42,552.54 : x
  2. Step 2: Convert to fraction form
    142,391.54/213,579.91 = 42,552.54/x
  3. Step 3: Cross multiply
    142,391.54x = 213,579.91 × 42,552.54
  4. Step 4: Simplify right side
    142,391.54x = 9,088,367,663.47
  5. Step 5: Solve for x
    x = 9,088,367,663.47/142,391.54
  6. Step 6: Final answer
    x = 63,826.60

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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.