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Finding the Fourth Proportional to 39,970.80, 59,956.20 and 19,234.80

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Solution

The fourth proportional to 39,970.80, 59,956.20 and 19,234.80 is: 28,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.80 : 59,956.20 = 19,234.80 : x
  2. Step 2: Convert to fraction form
    39,970.80/59,956.20 = 19,234.80/x
  3. Step 3: Cross multiply
    39,970.80x = 59,956.20 × 19,234.80
  4. Step 4: Simplify right side
    39,970.80x = 1,153,245,515.76
  5. Step 5: Solve for x
    x = 1,153,245,515.76/39,970.80
  6. Step 6: Final answer
    x = 28,852.20

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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.