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Finding the Fourth Proportional to 85,364.82, 117,803.34 and 47,639.07

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Solution

The fourth proportional to 85,364.82, 117,803.34 and 47,639.07 is: 65,741.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.82 : 117,803.34 = 47,639.07 : x
  2. Step 2: Convert to fraction form
    85,364.82/117,803.34 = 47,639.07/x
  3. Step 3: Cross multiply
    85,364.82x = 117,803.34 × 47,639.07
  4. Step 4: Simplify right side
    85,364.82x = 5,612,041,560.49
  5. Step 5: Solve for x
    x = 5,612,041,560.49/85,364.82
  6. Step 6: Final answer
    x = 65,741.85

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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.