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Finding the Fourth Proportional to 70,314.79, 105,545.08 and 47,103.43

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Solution

The fourth proportional to 70,314.79, 105,545.08 and 47,103.43 is: 70,703.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,314.79 : 105,545.08 = 47,103.43 : x
  2. Step 2: Convert to fraction form
    70,314.79/105,545.08 = 47,103.43/x
  3. Step 3: Cross multiply
    70,314.79x = 105,545.08 × 47,103.43
  4. Step 4: Simplify right side
    70,314.79x = 4,971,534,759.90
  5. Step 5: Solve for x
    x = 4,971,534,759.90/70,314.79
  6. Step 6: Final answer
    x = 70,703.97

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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.