Home / 72,911.43-100,604.30-42,695.19

Finding the Fourth Proportional to 72,911.43, 100,604.30 and 42,695.19

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Solution

The fourth proportional to 72,911.43, 100,604.30 and 42,695.19 is: 58,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,911.43 : 100,604.30 = 42,695.19 : x
  2. Step 2: Convert to fraction form
    72,911.43/100,604.30 = 42,695.19/x
  3. Step 3: Cross multiply
    72,911.43x = 100,604.30 × 42,695.19
  4. Step 4: Simplify right side
    72,911.43x = 4,295,319,489.84
  5. Step 5: Solve for x
    x = 4,295,319,489.84/72,911.43
  6. Step 6: Final answer
    x = 58,911.47

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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.