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Finding the Fourth Proportional to 51,859.60, 77,789.40 and 16,802.80

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Solution

The fourth proportional to 51,859.60, 77,789.40 and 16,802.80 is: 25,204.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,859.60 : 77,789.40 = 16,802.80 : x
  2. Step 2: Convert to fraction form
    51,859.60/77,789.40 = 16,802.80/x
  3. Step 3: Cross multiply
    51,859.60x = 77,789.40 × 16,802.80
  4. Step 4: Simplify right side
    51,859.60x = 1,307,079,730.32
  5. Step 5: Solve for x
    x = 1,307,079,730.32/51,859.60
  6. Step 6: Final answer
    x = 25,204.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.