Home / 51,640.47-71,259.48-28,976.40

Finding the Fourth Proportional to 51,640.47, 71,259.48 and 28,976.40

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Solution

The fourth proportional to 51,640.47, 71,259.48 and 28,976.40 is: 39,984.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,640.47 : 71,259.48 = 28,976.40 : x
  2. Step 2: Convert to fraction form
    51,640.47/71,259.48 = 28,976.40/x
  3. Step 3: Cross multiply
    51,640.47x = 71,259.48 × 28,976.40
  4. Step 4: Simplify right side
    51,640.47x = 2,064,843,196.27
  5. Step 5: Solve for x
    x = 2,064,843,196.27/51,640.47
  6. Step 6: Final answer
    x = 39,984.98

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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.