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Finding the Fourth Proportional to 72,371.99, 99,878.88 and 45,537.50

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Solution

The fourth proportional to 72,371.99, 99,878.88 and 45,537.50 is: 62,845.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,371.99 : 99,878.88 = 45,537.50 : x
  2. Step 2: Convert to fraction form
    72,371.99/99,878.88 = 45,537.50/x
  3. Step 3: Cross multiply
    72,371.99x = 99,878.88 × 45,537.50
  4. Step 4: Simplify right side
    72,371.99x = 4,548,234,498
  5. Step 5: Solve for x
    x = 4,548,234,498/72,371.99
  6. Step 6: Final answer
    x = 62,845.23

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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.