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Finding the Fourth Proportional to 70,315.24, 105,472.70 and 17,728.84

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Solution

The fourth proportional to 70,315.24, 105,472.70 and 17,728.84 is: 26,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,315.24 : 105,472.70 = 17,728.84 : x
  2. Step 2: Convert to fraction form
    70,315.24/105,472.70 = 17,728.84/x
  3. Step 3: Cross multiply
    70,315.24x = 105,472.70 × 17,728.84
  4. Step 4: Simplify right side
    70,315.24x = 1,869,908,622.67
  5. Step 5: Solve for x
    x = 1,869,908,622.67/70,315.24
  6. Step 6: Final answer
    x = 26,593.22

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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.