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Finding the Fourth Proportional to 75,135, 103,686.30 and 41,603.16

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Solution

The fourth proportional to 75,135, 103,686.30 and 41,603.16 is: 57,412.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,135 : 103,686.30 = 41,603.16 : x
  2. Step 2: Convert to fraction form
    75,135/103,686.30 = 41,603.16/x
  3. Step 3: Cross multiply
    75,135x = 103,686.30 × 41,603.16
  4. Step 4: Simplify right side
    75,135x = 4,313,677,728.71
  5. Step 5: Solve for x
    x = 4,313,677,728.71/75,135
  6. Step 6: Final answer
    x = 57,412.36

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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.