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Finding the Fourth Proportional to 75,904.70, 104,756.69 and 45,707.69

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Solution

The fourth proportional to 75,904.70, 104,756.69 and 45,707.69 is: 63,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,904.70 : 104,756.69 = 45,707.69 : x
  2. Step 2: Convert to fraction form
    75,904.70/104,756.69 = 45,707.69/x
  3. Step 3: Cross multiply
    75,904.70x = 104,756.69 × 45,707.69
  4. Step 4: Simplify right side
    75,904.70x = 4,788,186,688.11
  5. Step 5: Solve for x
    x = 4,788,186,688.11/75,904.70
  6. Step 6: Final answer
    x = 63,081.56

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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.