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Finding the Fourth Proportional to 81,407.80, 112,341.45 and 45,597.70

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Solution

The fourth proportional to 81,407.80, 112,341.45 and 45,597.70 is: 62,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,407.80 : 112,341.45 = 45,597.70 : x
  2. Step 2: Convert to fraction form
    81,407.80/112,341.45 = 45,597.70/x
  3. Step 3: Cross multiply
    81,407.80x = 112,341.45 × 45,597.70
  4. Step 4: Simplify right side
    81,407.80x = 5,122,511,453.81
  5. Step 5: Solve for x
    x = 5,122,511,453.81/81,407.80
  6. Step 6: Final answer
    x = 62,924.09

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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.