Home / 51,041.88-70,436.40-28,380.36

Finding the Fourth Proportional to 51,041.88, 70,436.40 and 28,380.36

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Solution

The fourth proportional to 51,041.88, 70,436.40 and 28,380.36 is: 39,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,041.88 : 70,436.40 = 28,380.36 : x
  2. Step 2: Convert to fraction form
    51,041.88/70,436.40 = 28,380.36/x
  3. Step 3: Cross multiply
    51,041.88x = 70,436.40 × 28,380.36
  4. Step 4: Simplify right side
    51,041.88x = 1,999,010,389.10
  5. Step 5: Solve for x
    x = 1,999,010,389.10/51,041.88
  6. Step 6: Final answer
    x = 39,164.12

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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.