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Finding the Fourth Proportional to 51,620.60, 77,445.48 and 21,648.98

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Solution

The fourth proportional to 51,620.60, 77,445.48 and 21,648.98 is: 32,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,620.60 : 77,445.48 = 21,648.98 : x
  2. Step 2: Convert to fraction form
    51,620.60/77,445.48 = 21,648.98/x
  3. Step 3: Cross multiply
    51,620.60x = 77,445.48 × 21,648.98
  4. Step 4: Simplify right side
    51,620.60x = 1,676,615,647.61
  5. Step 5: Solve for x
    x = 1,676,615,647.61/51,620.60
  6. Step 6: Final answer
    x = 32,479.58

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1.5x scale

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.