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Finding the Fourth Proportional to 75,628, 104,366.64 and 42,093.28

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Solution

The fourth proportional to 75,628, 104,366.64 and 42,093.28 is: 58,088.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,628 : 104,366.64 = 42,093.28 : x
  2. Step 2: Convert to fraction form
    75,628/104,366.64 = 42,093.28/x
  3. Step 3: Cross multiply
    75,628x = 104,366.64 × 42,093.28
  4. Step 4: Simplify right side
    75,628x = 4,393,134,200.18
  5. Step 5: Solve for x
    x = 4,393,134,200.18/75,628
  6. Step 6: Final answer
    x = 58,088.73

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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.