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Finding the Fourth Proportional to 51,079.60, 70,488.50 and 28,417.44

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Solution

The fourth proportional to 51,079.60, 70,488.50 and 28,417.44 is: 39,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,079.60 : 70,488.50 = 28,417.44 : x
  2. Step 2: Convert to fraction form
    51,079.60/70,488.50 = 28,417.44/x
  3. Step 3: Cross multiply
    51,079.60x = 70,488.50 × 28,417.44
  4. Step 4: Simplify right side
    51,079.60x = 2,003,102,719.44
  5. Step 5: Solve for x
    x = 2,003,102,719.44/51,079.60
  6. Step 6: Final answer
    x = 39,215.32

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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.