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Finding the Fourth Proportional to 70,472.08, 105,500.76 and 47,040.40

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Solution

The fourth proportional to 70,472.08, 105,500.76 and 47,040.40 is: 70,422.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,472.08 : 105,500.76 = 47,040.40 : x
  2. Step 2: Convert to fraction form
    70,472.08/105,500.76 = 47,040.40/x
  3. Step 3: Cross multiply
    70,472.08x = 105,500.76 × 47,040.40
  4. Step 4: Simplify right side
    70,472.08x = 4,962,797,950.70
  5. Step 5: Solve for x
    x = 4,962,797,950.70/70,472.08
  6. Step 6: Final answer
    x = 70,422.19

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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.