Home / 51,637.79-71,261.22-28,978.43

Finding the Fourth Proportional to 51,637.79, 71,261.22 and 28,978.43

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Solution

The fourth proportional to 51,637.79, 71,261.22 and 28,978.43 is: 39,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,637.79 : 71,261.22 = 28,978.43 : x
  2. Step 2: Convert to fraction form
    51,637.79/71,261.22 = 28,978.43/x
  3. Step 3: Cross multiply
    51,637.79x = 71,261.22 × 28,978.43
  4. Step 4: Simplify right side
    51,637.79x = 2,065,037,919.18
  5. Step 5: Solve for x
    x = 2,065,037,919.18/51,637.79
  6. Step 6: Final answer
    x = 39,990.83

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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.