Home / 51,039.21-70,436.45-28,380.53

Finding the Fourth Proportional to 51,039.21, 70,436.45 and 28,380.53

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Solution

The fourth proportional to 51,039.21, 70,436.45 and 28,380.53 is: 39,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,039.21 : 70,436.45 = 28,380.53 : x
  2. Step 2: Convert to fraction form
    51,039.21/70,436.45 = 28,380.53/x
  3. Step 3: Cross multiply
    51,039.21x = 70,436.45 × 28,380.53
  4. Step 4: Simplify right side
    51,039.21x = 1,999,023,782.32
  5. Step 5: Solve for x
    x = 1,999,023,782.32/51,039.21
  6. Step 6: Final answer
    x = 39,166.43

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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.