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Finding the Fourth Proportional to 101,759.38, 140,420.95 and 56,433.11

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Solution

The fourth proportional to 101,759.38, 140,420.95 and 56,433.11 is: 77,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,759.38 : 140,420.95 = 56,433.11 : x
  2. Step 2: Convert to fraction form
    101,759.38/140,420.95 = 56,433.11/x
  3. Step 3: Cross multiply
    101,759.38x = 140,420.95 × 56,433.11
  4. Step 4: Simplify right side
    101,759.38x = 7,924,390,074.47
  5. Step 5: Solve for x
    x = 7,924,390,074.47/101,759.38
  6. Step 6: Final answer
    x = 77,873.81

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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.