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Finding the Fourth Proportional to 85,064.60, 117,393.72 and 47,339.64

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Solution

The fourth proportional to 85,064.60, 117,393.72 and 47,339.64 is: 65,331.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,064.60 : 117,393.72 = 47,339.64 : x
  2. Step 2: Convert to fraction form
    85,064.60/117,393.72 = 47,339.64/x
  3. Step 3: Cross multiply
    85,064.60x = 117,393.72 × 47,339.64
  4. Step 4: Simplify right side
    85,064.60x = 5,557,376,443.06
  5. Step 5: Solve for x
    x = 5,557,376,443.06/85,064.60
  6. Step 6: Final answer
    x = 65,331.25

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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.