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Finding the Fourth Proportional to 75,101.19, 103,639.12 and 43,269.40

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Solution

The fourth proportional to 75,101.19, 103,639.12 and 43,269.40 is: 59,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,101.19 : 103,639.12 = 43,269.40 : x
  2. Step 2: Convert to fraction form
    75,101.19/103,639.12 = 43,269.40/x
  3. Step 3: Cross multiply
    75,101.19x = 103,639.12 × 43,269.40
  4. Step 4: Simplify right side
    75,101.19x = 4,484,402,538.93
  5. Step 5: Solve for x
    x = 4,484,402,538.93/75,101.19
  6. Step 6: Final answer
    x = 59,711.47

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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.