Home / 51,637.70-71,261.43-28,978.07

Finding the Fourth Proportional to 51,637.70, 71,261.43 and 28,978.07

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Solution

The fourth proportional to 51,637.70, 71,261.43 and 28,978.07 is: 39,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,637.70 : 71,261.43 = 28,978.07 : x
  2. Step 2: Convert to fraction form
    51,637.70/71,261.43 = 28,978.07/x
  3. Step 3: Cross multiply
    51,637.70x = 71,261.43 × 28,978.07
  4. Step 4: Simplify right side
    51,637.70x = 2,065,018,989.64
  5. Step 5: Solve for x
    x = 2,065,018,989.64/51,637.70
  6. Step 6: Final answer
    x = 39,990.53

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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.