Home / 51,438.31-70,984.51-28,777.21

Finding the Fourth Proportional to 51,438.31, 70,984.51 and 28,777.21

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Solution

The fourth proportional to 51,438.31, 70,984.51 and 28,777.21 is: 39,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.31 : 70,984.51 = 28,777.21 : x
  2. Step 2: Convert to fraction form
    51,438.31/70,984.51 = 28,777.21/x
  3. Step 3: Cross multiply
    51,438.31x = 70,984.51 × 28,777.21
  4. Step 4: Simplify right side
    51,438.31x = 2,042,735,901.61
  5. Step 5: Solve for x
    x = 2,042,735,901.61/51,438.31
  6. Step 6: Final answer
    x = 39,712.35

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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.