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Finding the Fourth Proportional to 81,663.34, 112,700.98 and 45,369.04

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Solution

The fourth proportional to 81,663.34, 112,700.98 and 45,369.04 is: 62,612.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,663.34 : 112,700.98 = 45,369.04 : x
  2. Step 2: Convert to fraction form
    81,663.34/112,700.98 = 45,369.04/x
  3. Step 3: Cross multiply
    81,663.34x = 112,700.98 × 45,369.04
  4. Step 4: Simplify right side
    81,663.34x = 5,113,135,269.66
  5. Step 5: Solve for x
    x = 5,113,135,269.66/81,663.34
  6. Step 6: Final answer
    x = 62,612.37

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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.