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Finding the Fourth Proportional to 61,957.90, 85,515.58 and 40,739.14

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Solution

The fourth proportional to 61,957.90, 85,515.58 and 40,739.14 is: 56,229.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,957.90 : 85,515.58 = 40,739.14 : x
  2. Step 2: Convert to fraction form
    61,957.90/85,515.58 = 40,739.14/x
  3. Step 3: Cross multiply
    61,957.90x = 85,515.58 × 40,739.14
  4. Step 4: Simplify right side
    61,957.90x = 3,483,831,185.80
  5. Step 5: Solve for x
    x = 3,483,831,185.80/61,957.90
  6. Step 6: Final answer
    x = 56,229.01

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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.