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Finding the Fourth Proportional to 47,199.69, 70,799.72 and 19,120.28

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Solution

The fourth proportional to 47,199.69, 70,799.72 and 19,120.28 is: 28,680.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,199.69 : 70,799.72 = 19,120.28 : x
  2. Step 2: Convert to fraction form
    47,199.69/70,799.72 = 19,120.28/x
  3. Step 3: Cross multiply
    47,199.69x = 70,799.72 × 19,120.28
  4. Step 4: Simplify right side
    47,199.69x = 1,353,710,470.32
  5. Step 5: Solve for x
    x = 1,353,710,470.32/47,199.69
  6. Step 6: Final answer
    x = 28,680.49

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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.