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Finding the Fourth Proportional to 75,900.36, 114,099.63 and 70,419.90

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Solution

The fourth proportional to 75,900.36, 114,099.63 and 70,419.90 is: 105,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,900.36 : 114,099.63 = 70,419.90 : x
  2. Step 2: Convert to fraction form
    75,900.36/114,099.63 = 70,419.90/x
  3. Step 3: Cross multiply
    75,900.36x = 114,099.63 × 70,419.90
  4. Step 4: Simplify right side
    75,900.36x = 8,034,884,534.64
  5. Step 5: Solve for x
    x = 8,034,884,534.64/75,900.36
  6. Step 6: Final answer
    x = 105,860.95

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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.