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Finding the Fourth Proportional to 72,999.82, 109,498.92 and 28,595.08

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Solution

The fourth proportional to 72,999.82, 109,498.92 and 28,595.08 is: 42,892.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,999.82 : 109,498.92 = 28,595.08 : x
  2. Step 2: Convert to fraction form
    72,999.82/109,498.92 = 28,595.08/x
  3. Step 3: Cross multiply
    72,999.82x = 109,498.92 × 28,595.08
  4. Step 4: Simplify right side
    72,999.82x = 3,131,130,377.31
  5. Step 5: Solve for x
    x = 3,131,130,377.31/72,999.82
  6. Step 6: Final answer
    x = 42,892.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.