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Finding the Fourth Proportional to 70,237.97, 105,357.05 and 28,684.97

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Solution

The fourth proportional to 70,237.97, 105,357.05 and 28,684.97 is: 43,027.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.97 : 105,357.05 = 28,684.97 : x
  2. Step 2: Convert to fraction form
    70,237.97/105,357.05 = 28,684.97/x
  3. Step 3: Cross multiply
    70,237.97x = 105,357.05 × 28,684.97
  4. Step 4: Simplify right side
    70,237.97x = 3,022,163,812.34
  5. Step 5: Solve for x
    x = 3,022,163,812.34/70,237.97
  6. Step 6: Final answer
    x = 43,027.49

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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.