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Finding the Fourth Proportional to 81,602.16, 122,329.34 and 28,999.34

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Solution

The fourth proportional to 81,602.16, 122,329.34 and 28,999.34 is: 43,472.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,602.16 : 122,329.34 = 28,999.34 : x
  2. Step 2: Convert to fraction form
    81,602.16/122,329.34 = 28,999.34/x
  3. Step 3: Cross multiply
    81,602.16x = 122,329.34 × 28,999.34
  4. Step 4: Simplify right side
    81,602.16x = 3,547,470,122.64
  5. Step 5: Solve for x
    x = 3,547,470,122.64/81,602.16
  6. Step 6: Final answer
    x = 43,472.75

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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.