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Finding the Fourth Proportional to 56,004.48, 83,939.94 and 39,045.78

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Solution

The fourth proportional to 56,004.48, 83,939.94 and 39,045.78 is: 58,522.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,004.48 : 83,939.94 = 39,045.78 : x
  2. Step 2: Convert to fraction form
    56,004.48/83,939.94 = 39,045.78/x
  3. Step 3: Cross multiply
    56,004.48x = 83,939.94 × 39,045.78
  4. Step 4: Simplify right side
    56,004.48x = 3,277,500,430.45
  5. Step 5: Solve for x
    x = 3,277,500,430.45/56,004.48
  6. Step 6: Final answer
    x = 58,522.11

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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.