Home / 77,947.20-116,921.07-21,786.95

Finding the Fourth Proportional to 77,947.20, 116,921.07 and 21,786.95

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Solution

The fourth proportional to 77,947.20, 116,921.07 and 21,786.95 is: 32,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,947.20 : 116,921.07 = 21,786.95 : x
  2. Step 2: Convert to fraction form
    77,947.20/116,921.07 = 21,786.95/x
  3. Step 3: Cross multiply
    77,947.20x = 116,921.07 × 21,786.95
  4. Step 4: Simplify right side
    77,947.20x = 2,547,353,798.34
  5. Step 5: Solve for x
    x = 2,547,353,798.34/77,947.20
  6. Step 6: Final answer
    x = 32,680.50

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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.