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Finding the Fourth Proportional to 88,480, 122,102.40 and 48,736

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Solution

The fourth proportional to 88,480, 122,102.40 and 48,736 is: 67,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,480 : 122,102.40 = 48,736 : x
  2. Step 2: Convert to fraction form
    88,480/122,102.40 = 48,736/x
  3. Step 3: Cross multiply
    88,480x = 122,102.40 × 48,736
  4. Step 4: Simplify right side
    88,480x = 5,950,782,566.40
  5. Step 5: Solve for x
    x = 5,950,782,566.40/88,480
  6. Step 6: Final answer
    x = 67,255.68

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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.