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Finding the Fourth Proportional to 72,950.52, 100,671.75 and 39,416.52

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Solution

The fourth proportional to 72,950.52, 100,671.75 and 39,416.52 is: 54,394.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.52 : 100,671.75 = 39,416.52 : x
  2. Step 2: Convert to fraction form
    72,950.52/100,671.75 = 39,416.52/x
  3. Step 3: Cross multiply
    72,950.52x = 100,671.75 × 39,416.52
  4. Step 4: Simplify right side
    72,950.52x = 3,968,130,047.31
  5. Step 5: Solve for x
    x = 3,968,130,047.31/72,950.52
  6. Step 6: Final answer
    x = 54,394.82

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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.