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Finding the Fourth Proportional to 34,781.90, 47,962.72 and 20,632.01

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Solution

The fourth proportional to 34,781.90, 47,962.72 and 20,632.01 is: 28,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,781.90 : 47,962.72 = 20,632.01 : x
  2. Step 2: Convert to fraction form
    34,781.90/47,962.72 = 20,632.01/x
  3. Step 3: Cross multiply
    34,781.90x = 47,962.72 × 20,632.01
  4. Step 4: Simplify right side
    34,781.90x = 989,567,386.99
  5. Step 5: Solve for x
    x = 989,567,386.99/34,781.90
  6. Step 6: Final answer
    x = 28,450.64

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