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Finding the Fourth Proportional to 85,377.94, 117,810.69 and 47,653.78

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Solution

The fourth proportional to 85,377.94, 117,810.69 and 47,653.78 is: 65,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,377.94 : 117,810.69 = 47,653.78 : x
  2. Step 2: Convert to fraction form
    85,377.94/117,810.69 = 47,653.78/x
  3. Step 3: Cross multiply
    85,377.94x = 117,810.69 × 47,653.78
  4. Step 4: Simplify right side
    85,377.94x = 5,614,124,702.91
  5. Step 5: Solve for x
    x = 5,614,124,702.91/85,377.94
  6. Step 6: Final answer
    x = 65,756.15

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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.