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Finding the Fourth Proportional to 85,298.64, 117,712.28 and 47,575.32

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Solution

The fourth proportional to 85,298.64, 117,712.28 and 47,575.32 is: 65,654.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,298.64 : 117,712.28 = 47,575.32 : x
  2. Step 2: Convert to fraction form
    85,298.64/117,712.28 = 47,575.32/x
  3. Step 3: Cross multiply
    85,298.64x = 117,712.28 × 47,575.32
  4. Step 4: Simplify right side
    85,298.64x = 5,600,199,388.93
  5. Step 5: Solve for x
    x = 5,600,199,388.93/85,298.64
  6. Step 6: Final answer
    x = 65,654.03

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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.