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Finding the Fourth Proportional to 70,644.84, 97,489.80 and 38,813.66

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Solution

The fourth proportional to 70,644.84, 97,489.80 and 38,813.66 is: 53,562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,644.84 : 97,489.80 = 38,813.66 : x
  2. Step 2: Convert to fraction form
    70,644.84/97,489.80 = 38,813.66/x
  3. Step 3: Cross multiply
    70,644.84x = 97,489.80 × 38,813.66
  4. Step 4: Simplify right side
    70,644.84x = 3,783,935,950.67
  5. Step 5: Solve for x
    x = 3,783,935,950.67/70,644.84
  6. Step 6: Final answer
    x = 53,562.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.