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Finding the Fourth Proportional to 82,860.60, 124,290.90 and 51,367.80

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Solution

The fourth proportional to 82,860.60, 124,290.90 and 51,367.80 is: 77,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,860.60 : 124,290.90 = 51,367.80 : x
  2. Step 2: Convert to fraction form
    82,860.60/124,290.90 = 51,367.80/x
  3. Step 3: Cross multiply
    82,860.60x = 124,290.90 × 51,367.80
  4. Step 4: Simplify right side
    82,860.60x = 6,384,550,093.02
  5. Step 5: Solve for x
    x = 6,384,550,093.02/82,860.60
  6. Step 6: Final answer
    x = 77,051.70

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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.