Home / 51,431.98-70,970.07-28,772.14

Finding the Fourth Proportional to 51,431.98, 70,970.07 and 28,772.14

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Solution

The fourth proportional to 51,431.98, 70,970.07 and 28,772.14 is: 39,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.98 : 70,970.07 = 28,772.14 : x
  2. Step 2: Convert to fraction form
    51,431.98/70,970.07 = 28,772.14/x
  3. Step 3: Cross multiply
    51,431.98x = 70,970.07 × 28,772.14
  4. Step 4: Simplify right side
    51,431.98x = 2,041,960,789.85
  5. Step 5: Solve for x
    x = 2,041,960,789.85/51,431.98
  6. Step 6: Final answer
    x = 39,702.16

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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.