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Finding the Fourth Proportional to 70,502.80, 105,768.60 and 23,760.40

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Solution

The fourth proportional to 70,502.80, 105,768.60 and 23,760.40 is: 35,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,502.80 : 105,768.60 = 23,760.40 : x
  2. Step 2: Convert to fraction form
    70,502.80/105,768.60 = 23,760.40/x
  3. Step 3: Cross multiply
    70,502.80x = 105,768.60 × 23,760.40
  4. Step 4: Simplify right side
    70,502.80x = 2,513,104,243.44
  5. Step 5: Solve for x
    x = 2,513,104,243.44/70,502.80
  6. Step 6: Final answer
    x = 35,645.45

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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.