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Finding the Fourth Proportional to 81,484.79, 112,449.24 and 45,188.79

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Solution

The fourth proportional to 81,484.79, 112,449.24 and 45,188.79 is: 62,360.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,484.79 : 112,449.24 = 45,188.79 : x
  2. Step 2: Convert to fraction form
    81,484.79/112,449.24 = 45,188.79/x
  3. Step 3: Cross multiply
    81,484.79x = 112,449.24 × 45,188.79
  4. Step 4: Simplify right side
    81,484.79x = 5,081,444,980.35
  5. Step 5: Solve for x
    x = 5,081,444,980.35/81,484.79
  6. Step 6: Final answer
    x = 62,360.66

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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.