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Finding the Fourth Proportional to 72,370.99, 99,877.50 and 45,536.50

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Solution

The fourth proportional to 72,370.99, 99,877.50 and 45,536.50 is: 62,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,370.99 : 99,877.50 = 45,536.50 : x
  2. Step 2: Convert to fraction form
    72,370.99/99,877.50 = 45,536.50/x
  3. Step 3: Cross multiply
    72,370.99x = 99,877.50 × 45,536.50
  4. Step 4: Simplify right side
    72,370.99x = 4,548,071,778.75
  5. Step 5: Solve for x
    x = 4,548,071,778.75/72,370.99
  6. Step 6: Final answer
    x = 62,843.85

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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.