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Finding the Fourth Proportional to 71,881.91, 99,194.74 and 45,038.91

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Solution

The fourth proportional to 71,881.91, 99,194.74 and 45,038.91 is: 62,152.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,881.91 : 99,194.74 = 45,038.91 : x
  2. Step 2: Convert to fraction form
    71,881.91/99,194.74 = 45,038.91/x
  3. Step 3: Cross multiply
    71,881.91x = 99,194.74 × 45,038.91
  4. Step 4: Simplify right side
    71,881.91x = 4,467,622,967.33
  5. Step 5: Solve for x
    x = 4,467,622,967.33/71,881.91
  6. Step 6: Final answer
    x = 62,152.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.