Home / 76,210.79-105,170.87-42,221.48

Finding the Fourth Proportional to 76,210.79, 105,170.87 and 42,221.48

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Solution

The fourth proportional to 76,210.79, 105,170.87 and 42,221.48 is: 58,265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,210.79 : 105,170.87 = 42,221.48 : x
  2. Step 2: Convert to fraction form
    76,210.79/105,170.87 = 42,221.48/x
  3. Step 3: Cross multiply
    76,210.79x = 105,170.87 × 42,221.48
  4. Step 4: Simplify right side
    76,210.79x = 4,440,469,047.33
  5. Step 5: Solve for x
    x = 4,440,469,047.33/76,210.79
  6. Step 6: Final answer
    x = 58,265.63

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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.