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Finding the Fourth Proportional to 95,200.80, 142,800.48 and 28,640.64

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Solution

The fourth proportional to 95,200.80, 142,800.48 and 28,640.64 is: 42,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,200.80 : 142,800.48 = 28,640.64 : x
  2. Step 2: Convert to fraction form
    95,200.80/142,800.48 = 28,640.64/x
  3. Step 3: Cross multiply
    95,200.80x = 142,800.48 × 28,640.64
  4. Step 4: Simplify right side
    95,200.80x = 4,089,897,139.51
  5. Step 5: Solve for x
    x = 4,089,897,139.51/95,200.80
  6. Step 6: Final answer
    x = 42,960.74

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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.