Home / 51,378.71-70,901.12-28,717.74

Finding the Fourth Proportional to 51,378.71, 70,901.12 and 28,717.74

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Solution

The fourth proportional to 51,378.71, 70,901.12 and 28,717.74 is: 39,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,378.71 : 70,901.12 = 28,717.74 : x
  2. Step 2: Convert to fraction form
    51,378.71/70,901.12 = 28,717.74/x
  3. Step 3: Cross multiply
    51,378.71x = 70,901.12 × 28,717.74
  4. Step 4: Simplify right side
    51,378.71x = 2,036,120,001.66
  5. Step 5: Solve for x
    x = 2,036,120,001.66/51,378.71
  6. Step 6: Final answer
    x = 39,629.65

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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.