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Finding the Fourth Proportional to 72,021.30, 107,837.55 and 56,469.30

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Solution

The fourth proportional to 72,021.30, 107,837.55 and 56,469.30 is: 84,551.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.30 : 107,837.55 = 56,469.30 : x
  2. Step 2: Convert to fraction form
    72,021.30/107,837.55 = 56,469.30/x
  3. Step 3: Cross multiply
    72,021.30x = 107,837.55 × 56,469.30
  4. Step 4: Simplify right side
    72,021.30x = 6,089,510,962.22
  5. Step 5: Solve for x
    x = 6,089,510,962.22/72,021.30
  6. Step 6: Final answer
    x = 84,551.53

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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.