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Finding the Fourth Proportional to 70,366.79, 105,509.72 and 21,667.46

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Solution

The fourth proportional to 70,366.79, 105,509.72 and 21,667.46 is: 32,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,366.79 : 105,509.72 = 21,667.46 : x
  2. Step 2: Convert to fraction form
    70,366.79/105,509.72 = 21,667.46/x
  3. Step 3: Cross multiply
    70,366.79x = 105,509.72 × 21,667.46
  4. Step 4: Simplify right side
    70,366.79x = 2,286,127,727.85
  5. Step 5: Solve for x
    x = 2,286,127,727.85/70,366.79
  6. Step 6: Final answer
    x = 32,488.73

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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.