Home / 76,161.28-105,108.48-42,172.92

Finding the Fourth Proportional to 76,161.28, 105,108.48 and 42,172.92

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Solution

The fourth proportional to 76,161.28, 105,108.48 and 42,172.92 is: 58,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,161.28 : 105,108.48 = 42,172.92 : x
  2. Step 2: Convert to fraction form
    76,161.28/105,108.48 = 42,172.92/x
  3. Step 3: Cross multiply
    76,161.28x = 105,108.48 × 42,172.92
  4. Step 4: Simplify right side
    76,161.28x = 4,432,731,843.18
  5. Step 5: Solve for x
    x = 4,432,731,843.18/76,161.28
  6. Step 6: Final answer
    x = 58,201.91

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1.5x scale

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.