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Finding the Fourth Proportional to 70,774.66, 97,671.68 and 40,565.80

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Solution

The fourth proportional to 70,774.66, 97,671.68 and 40,565.80 is: 55,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,774.66 : 97,671.68 = 40,565.80 : x
  2. Step 2: Convert to fraction form
    70,774.66/97,671.68 = 40,565.80/x
  3. Step 3: Cross multiply
    70,774.66x = 97,671.68 × 40,565.80
  4. Step 4: Simplify right side
    70,774.66x = 3,962,129,836.54
  5. Step 5: Solve for x
    x = 3,962,129,836.54/70,774.66
  6. Step 6: Final answer
    x = 55,982.32

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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.