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Finding the Fourth Proportional to 68,017.68, 101,415.60 and 65,419.20

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Solution

The fourth proportional to 68,017.68, 101,415.60 and 65,419.20 is: 97,541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,017.68 : 101,415.60 = 65,419.20 : x
  2. Step 2: Convert to fraction form
    68,017.68/101,415.60 = 65,419.20/x
  3. Step 3: Cross multiply
    68,017.68x = 101,415.60 × 65,419.20
  4. Step 4: Simplify right side
    68,017.68x = 6,634,527,419.52
  5. Step 5: Solve for x
    x = 6,634,527,419.52/68,017.68
  6. Step 6: Final answer
    x = 97,541.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.