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Finding the Fourth Proportional to 77,497.56, 106,919.14 and 50,655.56

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Solution

The fourth proportional to 77,497.56, 106,919.14 and 50,655.56 is: 69,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,497.56 : 106,919.14 = 50,655.56 : x
  2. Step 2: Convert to fraction form
    77,497.56/106,919.14 = 50,655.56/x
  3. Step 3: Cross multiply
    77,497.56x = 106,919.14 × 50,655.56
  4. Step 4: Simplify right side
    77,497.56x = 5,416,048,911.42
  5. Step 5: Solve for x
    x = 5,416,048,911.42/77,497.56
  6. Step 6: Final answer
    x = 69,886.70

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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.