Home / 72,904.89-100,610.85-42,687.37

Finding the Fourth Proportional to 72,904.89, 100,610.85 and 42,687.37

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Solution

The fourth proportional to 72,904.89, 100,610.85 and 42,687.37 is: 58,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,904.89 : 100,610.85 = 42,687.37 : x
  2. Step 2: Convert to fraction form
    72,904.89/100,610.85 = 42,687.37/x
  3. Step 3: Cross multiply
    72,904.89x = 100,610.85 × 42,687.37
  4. Step 4: Simplify right side
    72,904.89x = 4,294,812,579.96
  5. Step 5: Solve for x
    x = 4,294,812,579.96/72,904.89
  6. Step 6: Final answer
    x = 58,909.80

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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.