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Finding the Fourth Proportional to 70,644.40, 97,490.88 and 38,811.28

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Solution

The fourth proportional to 70,644.40, 97,490.88 and 38,811.28 is: 53,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,644.40 : 97,490.88 = 38,811.28 : x
  2. Step 2: Convert to fraction form
    70,644.40/97,490.88 = 38,811.28/x
  3. Step 3: Cross multiply
    70,644.40x = 97,490.88 × 38,811.28
  4. Step 4: Simplify right side
    70,644.40x = 3,783,745,841.13
  5. Step 5: Solve for x
    x = 3,783,745,841.13/70,644.40
  6. Step 6: Final answer
    x = 53,560.45

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