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Finding the Fourth Proportional to 75,122.58, 103,612.59 and 66,134.01

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Solution

The fourth proportional to 75,122.58, 103,612.59 and 66,134.01 is: 91,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,122.58 : 103,612.59 = 66,134.01 : x
  2. Step 2: Convert to fraction form
    75,122.58/103,612.59 = 66,134.01/x
  3. Step 3: Cross multiply
    75,122.58x = 103,612.59 × 66,134.01
  4. Step 4: Simplify right side
    75,122.58x = 6,852,316,063.19
  5. Step 5: Solve for x
    x = 6,852,316,063.19/75,122.58
  6. Step 6: Final answer
    x = 91,215.13

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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.