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Finding the Fourth Proportional to 85,410.14, 127,941.16 and 51,655.62

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Solution

The fourth proportional to 85,410.14, 127,941.16 and 51,655.62 is: 77,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410.14 : 127,941.16 = 51,655.62 : x
  2. Step 2: Convert to fraction form
    85,410.14/127,941.16 = 51,655.62/x
  3. Step 3: Cross multiply
    85,410.14x = 127,941.16 × 51,655.62
  4. Step 4: Simplify right side
    85,410.14x = 6,608,879,943.32
  5. Step 5: Solve for x
    x = 6,608,879,943.32/85,410.14
  6. Step 6: Final answer
    x = 77,378.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.