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Finding the Fourth Proportional to 72,623.34, 100,220.22 and 40,802.49

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Solution

The fourth proportional to 72,623.34, 100,220.22 and 40,802.49 is: 56,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,623.34 : 100,220.22 = 40,802.49 : x
  2. Step 2: Convert to fraction form
    72,623.34/100,220.22 = 40,802.49/x
  3. Step 3: Cross multiply
    72,623.34x = 100,220.22 × 40,802.49
  4. Step 4: Simplify right side
    72,623.34x = 4,089,234,524.35
  5. Step 5: Solve for x
    x = 4,089,234,524.35/72,623.34
  6. Step 6: Final answer
    x = 56,307.44

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1.5x scale

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.