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Finding the Fourth Proportional to 70,480.61, 105,773.48 and 28,361.07

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Solution

The fourth proportional to 70,480.61, 105,773.48 and 28,361.07 is: 42,562.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,480.61 : 105,773.48 = 28,361.07 : x
  2. Step 2: Convert to fraction form
    70,480.61/105,773.48 = 28,361.07/x
  3. Step 3: Cross multiply
    70,480.61x = 105,773.48 × 28,361.07
  4. Step 4: Simplify right side
    70,480.61x = 2,999,849,034.97
  5. Step 5: Solve for x
    x = 2,999,849,034.97/70,480.61
  6. Step 6: Final answer
    x = 42,562.75

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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.