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Finding the Fourth Proportional to 85,309.64, 117,727.48 and 47,586.32

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Solution

The fourth proportional to 85,309.64, 117,727.48 and 47,586.32 is: 65,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,309.64 : 117,727.48 = 47,586.32 : x
  2. Step 2: Convert to fraction form
    85,309.64/117,727.48 = 47,586.32/x
  3. Step 3: Cross multiply
    85,309.64x = 117,727.48 × 47,586.32
  4. Step 4: Simplify right side
    85,309.64x = 5,602,217,536.07
  5. Step 5: Solve for x
    x = 5,602,217,536.07/85,309.64
  6. Step 6: Final answer
    x = 65,669.22

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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.