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Finding the Fourth Proportional to 85,707.82, 128,597.61 and 37,651.64

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Solution

The fourth proportional to 85,707.82, 128,597.61 and 37,651.64 is: 56,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.82 : 128,597.61 = 37,651.64 : x
  2. Step 2: Convert to fraction form
    85,707.82/128,597.61 = 37,651.64/x
  3. Step 3: Cross multiply
    85,707.82x = 128,597.61 × 37,651.64
  4. Step 4: Simplify right side
    85,707.82x = 4,841,910,916.58
  5. Step 5: Solve for x
    x = 4,841,910,916.58/85,707.82
  6. Step 6: Final answer
    x = 56,493.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.