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Finding the Fourth Proportional to 58,665.50, 87,999.70 and 21,229.10

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Solution

The fourth proportional to 58,665.50, 87,999.70 and 21,229.10 is: 31,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,665.50 : 87,999.70 = 21,229.10 : x
  2. Step 2: Convert to fraction form
    58,665.50/87,999.70 = 21,229.10/x
  3. Step 3: Cross multiply
    58,665.50x = 87,999.70 × 21,229.10
  4. Step 4: Simplify right side
    58,665.50x = 1,868,154,431.27
  5. Step 5: Solve for x
    x = 1,868,154,431.27/58,665.50
  6. Step 6: Final answer
    x = 31,844.17

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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.