Home / 70,631.18-105,945.32-20,710.17

Finding the Fourth Proportional to 70,631.18, 105,945.32 and 20,710.17

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Solution

The fourth proportional to 70,631.18, 105,945.32 and 20,710.17 is: 31,064.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,631.18 : 105,945.32 = 20,710.17 : x
  2. Step 2: Convert to fraction form
    70,631.18/105,945.32 = 20,710.17/x
  3. Step 3: Cross multiply
    70,631.18x = 105,945.32 × 20,710.17
  4. Step 4: Simplify right side
    70,631.18x = 2,194,145,484.35
  5. Step 5: Solve for x
    x = 2,194,145,484.35/70,631.18
  6. Step 6: Final answer
    x = 31,064.83

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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.