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Finding the Fourth Proportional to 81,596.98, 112,513.89 and 56,402.74

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Solution

The fourth proportional to 81,596.98, 112,513.89 and 56,402.74 is: 77,773.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,596.98 : 112,513.89 = 56,402.74 : x
  2. Step 2: Convert to fraction form
    81,596.98/112,513.89 = 56,402.74/x
  3. Step 3: Cross multiply
    81,596.98x = 112,513.89 × 56,402.74
  4. Step 4: Simplify right side
    81,596.98x = 6,346,091,684.06
  5. Step 5: Solve for x
    x = 6,346,091,684.06/81,596.98
  6. Step 6: Final answer
    x = 77,773.61

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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.