Home / 51,680.54-71,320.02-28,709.76

Finding the Fourth Proportional to 51,680.54, 71,320.02 and 28,709.76

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Solution

The fourth proportional to 51,680.54, 71,320.02 and 28,709.76 is: 39,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,680.54 : 71,320.02 = 28,709.76 : x
  2. Step 2: Convert to fraction form
    51,680.54/71,320.02 = 28,709.76/x
  3. Step 3: Cross multiply
    51,680.54x = 71,320.02 × 28,709.76
  4. Step 4: Simplify right side
    51,680.54x = 2,047,580,657.40
  5. Step 5: Solve for x
    x = 2,047,580,657.40/51,680.54
  6. Step 6: Final answer
    x = 39,619.95

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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.