Home / 72,340.40-99,864.35-48,181.54

Finding the Fourth Proportional to 72,340.40, 99,864.35 and 48,181.54

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Solution

The fourth proportional to 72,340.40, 99,864.35 and 48,181.54 is: 66,513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,340.40 : 99,864.35 = 48,181.54 : x
  2. Step 2: Convert to fraction form
    72,340.40/99,864.35 = 48,181.54/x
  3. Step 3: Cross multiply
    72,340.40x = 99,864.35 × 48,181.54
  4. Step 4: Simplify right side
    72,340.40x = 4,811,618,174.10
  5. Step 5: Solve for x
    x = 4,811,618,174.10/72,340.40
  6. Step 6: Final answer
    x = 66,513.57

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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.