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Finding the Fourth Proportional to 70,497.67, 105,752.74 and 19,897.15

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Solution

The fourth proportional to 70,497.67, 105,752.74 and 19,897.15 is: 29,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,497.67 : 105,752.74 = 19,897.15 : x
  2. Step 2: Convert to fraction form
    70,497.67/105,752.74 = 19,897.15/x
  3. Step 3: Cross multiply
    70,497.67x = 105,752.74 × 19,897.15
  4. Step 4: Simplify right side
    70,497.67x = 2,104,177,816.57
  5. Step 5: Solve for x
    x = 2,104,177,816.57/70,497.67
  6. Step 6: Final answer
    x = 29,847.48

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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.