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Finding the Fourth Proportional to 85,633.52, 128,462.54 and 26,473.77

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Solution

The fourth proportional to 85,633.52, 128,462.54 and 26,473.77 is: 39,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,633.52 : 128,462.54 = 26,473.77 : x
  2. Step 2: Convert to fraction form
    85,633.52/128,462.54 = 26,473.77/x
  3. Step 3: Cross multiply
    85,633.52x = 128,462.54 × 26,473.77
  4. Step 4: Simplify right side
    85,633.52x = 3,400,887,605.21
  5. Step 5: Solve for x
    x = 3,400,887,605.21/85,633.52
  6. Step 6: Final answer
    x = 39,714.45

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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.