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Finding the Fourth Proportional to 51,360.48, 70,876.56 and 28,698

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Solution

The fourth proportional to 51,360.48, 70,876.56 and 28,698 is: 39,602.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,360.48 : 70,876.56 = 28,698 : x
  2. Step 2: Convert to fraction form
    51,360.48/70,876.56 = 28,698/x
  3. Step 3: Cross multiply
    51,360.48x = 70,876.56 × 28,698
  4. Step 4: Simplify right side
    51,360.48x = 2,034,015,518.88
  5. Step 5: Solve for x
    x = 2,034,015,518.88/51,360.48
  6. Step 6: Final answer
    x = 39,602.74

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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.