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Finding the Fourth Proportional to 75,603.48, 104,344.28 and 45,405.48

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Solution

The fourth proportional to 75,603.48, 104,344.28 and 45,405.48 is: 62,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,603.48 : 104,344.28 = 45,405.48 : x
  2. Step 2: Convert to fraction form
    75,603.48/104,344.28 = 45,405.48/x
  3. Step 3: Cross multiply
    75,603.48x = 104,344.28 × 45,405.48
  4. Step 4: Simplify right side
    75,603.48x = 4,737,802,118.65
  5. Step 5: Solve for x
    x = 4,737,802,118.65/75,603.48
  6. Step 6: Final answer
    x = 62,666.46

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1.5x scale

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.