Home / 51,712.80-71,361.40-31,603.32

Finding the Fourth Proportional to 51,712.80, 71,361.40 and 31,603.32

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Solution

The fourth proportional to 51,712.80, 71,361.40 and 31,603.32 is: 43,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,712.80 : 71,361.40 = 31,603.32 : x
  2. Step 2: Convert to fraction form
    51,712.80/71,361.40 = 31,603.32/x
  3. Step 3: Cross multiply
    51,712.80x = 71,361.40 × 31,603.32
  4. Step 4: Simplify right side
    51,712.80x = 2,255,257,159.85
  5. Step 5: Solve for x
    x = 2,255,257,159.85/51,712.80
  6. Step 6: Final answer
    x = 43,611.20

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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.