Home / 70,521.50-105,778.34-51,565.56

Finding the Fourth Proportional to 70,521.50, 105,778.34 and 51,565.56

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Solution

The fourth proportional to 70,521.50, 105,778.34 and 51,565.56 is: 77,345.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,521.50 : 105,778.34 = 51,565.56 : x
  2. Step 2: Convert to fraction form
    70,521.50/105,778.34 = 51,565.56/x
  3. Step 3: Cross multiply
    70,521.50x = 105,778.34 × 51,565.56
  4. Step 4: Simplify right side
    70,521.50x = 5,454,519,337.97
  5. Step 5: Solve for x
    x = 5,454,519,337.97/70,521.50
  6. Step 6: Final answer
    x = 77,345.48

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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.