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Finding the Fourth Proportional to 51,191.87, 70,650.53 and 28,532.93

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Solution

The fourth proportional to 51,191.87, 70,650.53 and 28,532.93 is: 39,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,191.87 : 70,650.53 = 28,532.93 : x
  2. Step 2: Convert to fraction form
    51,191.87/70,650.53 = 28,532.93/x
  3. Step 3: Cross multiply
    51,191.87x = 70,650.53 × 28,532.93
  4. Step 4: Simplify right side
    51,191.87x = 2,015,866,484.29
  5. Step 5: Solve for x
    x = 2,015,866,484.29/51,191.87
  6. Step 6: Final answer
    x = 39,378.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.