Home / 47,320.80-70,981.20-19,618.80

Finding the Fourth Proportional to 47,320.80, 70,981.20 and 19,618.80

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Solution

The fourth proportional to 47,320.80, 70,981.20 and 19,618.80 is: 29,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,320.80 : 70,981.20 = 19,618.80 : x
  2. Step 2: Convert to fraction form
    47,320.80/70,981.20 = 19,618.80/x
  3. Step 3: Cross multiply
    47,320.80x = 70,981.20 × 19,618.80
  4. Step 4: Simplify right side
    47,320.80x = 1,392,565,966.56
  5. Step 5: Solve for x
    x = 1,392,565,966.56/47,320.80
  6. Step 6: Final answer
    x = 29,428.20

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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.