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Finding the Fourth Proportional to 72,852.35, 100,536.62 and 42,631.79

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Solution

The fourth proportional to 72,852.35, 100,536.62 and 42,631.79 is: 58,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,852.35 : 100,536.62 = 42,631.79 : x
  2. Step 2: Convert to fraction form
    72,852.35/100,536.62 = 42,631.79/x
  3. Step 3: Cross multiply
    72,852.35x = 100,536.62 × 42,631.79
  4. Step 4: Simplify right side
    72,852.35x = 4,286,055,355.31
  5. Step 5: Solve for x
    x = 4,286,055,355.31/72,852.35
  6. Step 6: Final answer
    x = 58,832.09

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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.