Home / 70,345.12-105,520.92-39,156.88

Finding the Fourth Proportional to 70,345.12, 105,520.92 and 39,156.88

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Solution

The fourth proportional to 70,345.12, 105,520.92 and 39,156.88 is: 58,737.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,345.12 : 105,520.92 = 39,156.88 : x
  2. Step 2: Convert to fraction form
    70,345.12/105,520.92 = 39,156.88/x
  3. Step 3: Cross multiply
    70,345.12x = 105,520.92 × 39,156.88
  4. Step 4: Simplify right side
    70,345.12x = 4,131,870,001.93
  5. Step 5: Solve for x
    x = 4,131,870,001.93/70,345.12
  6. Step 6: Final answer
    x = 58,737.12

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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.