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Finding the Fourth Proportional to 70,667.46, 106,012.71 and 20,749.19

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Solution

The fourth proportional to 70,667.46, 106,012.71 and 20,749.19 is: 31,127.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,667.46 : 106,012.71 = 20,749.19 : x
  2. Step 2: Convert to fraction form
    70,667.46/106,012.71 = 20,749.19/x
  3. Step 3: Cross multiply
    70,667.46x = 106,012.71 × 20,749.19
  4. Step 4: Simplify right side
    70,667.46x = 2,199,677,332.14
  5. Step 5: Solve for x
    x = 2,199,677,332.14/70,667.46
  6. Step 6: Final answer
    x = 31,127.16

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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.