Home / 56,335.50-77,744.21-30,842.78

Finding the Fourth Proportional to 56,335.50, 77,744.21 and 30,842.78

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Solution

The fourth proportional to 56,335.50, 77,744.21 and 30,842.78 is: 42,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,335.50 : 77,744.21 = 30,842.78 : x
  2. Step 2: Convert to fraction form
    56,335.50/77,744.21 = 30,842.78/x
  3. Step 3: Cross multiply
    56,335.50x = 77,744.21 × 30,842.78
  4. Step 4: Simplify right side
    56,335.50x = 2,397,847,022.37
  5. Step 5: Solve for x
    x = 2,397,847,022.37/56,335.50
  6. Step 6: Final answer
    x = 42,563.69

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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.