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Finding the Fourth Proportional to 82,009.45, 122,564.80 and 59,869.45

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Solution

The fourth proportional to 82,009.45, 122,564.80 and 59,869.45 is: 89,476.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,009.45 : 122,564.80 = 59,869.45 : x
  2. Step 2: Convert to fraction form
    82,009.45/122,564.80 = 59,869.45/x
  3. Step 3: Cross multiply
    82,009.45x = 122,564.80 × 59,869.45
  4. Step 4: Simplify right side
    82,009.45x = 7,337,887,165.36
  5. Step 5: Solve for x
    x = 7,337,887,165.36/82,009.45
  6. Step 6: Final answer
    x = 89,476.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.