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Finding the Fourth Proportional to 28,690.96, 42,748.07 and 27,079.48

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Solution

The fourth proportional to 28,690.96, 42,748.07 and 27,079.48 is: 40,347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.96 : 42,748.07 = 27,079.48 : x
  2. Step 2: Convert to fraction form
    28,690.96/42,748.07 = 27,079.48/x
  3. Step 3: Cross multiply
    28,690.96x = 42,748.07 × 27,079.48
  4. Step 4: Simplify right side
    28,690.96x = 1,157,595,506.60
  5. Step 5: Solve for x
    x = 1,157,595,506.60/28,690.96
  6. Step 6: Final answer
    x = 40,347.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.