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Finding the Fourth Proportional to 101,904.78, 140,630.25 and 56,585.67

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Solution

The fourth proportional to 101,904.78, 140,630.25 and 56,585.67 is: 78,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,904.78 : 140,630.25 = 56,585.67 : x
  2. Step 2: Convert to fraction form
    101,904.78/140,630.25 = 56,585.67/x
  3. Step 3: Cross multiply
    101,904.78x = 140,630.25 × 56,585.67
  4. Step 4: Simplify right side
    101,904.78x = 7,957,656,918.52
  5. Step 5: Solve for x
    x = 7,957,656,918.52/101,904.78
  6. Step 6: Final answer
    x = 78,089.14

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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.