Home / 71,678.01-98,916.64-39,847.60

Finding the Fourth Proportional to 71,678.01, 98,916.64 and 39,847.60

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Solution

The fourth proportional to 71,678.01, 98,916.64 and 39,847.60 is: 54,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,678.01 : 98,916.64 = 39,847.60 : x
  2. Step 2: Convert to fraction form
    71,678.01/98,916.64 = 39,847.60/x
  3. Step 3: Cross multiply
    71,678.01x = 98,916.64 × 39,847.60
  4. Step 4: Simplify right side
    71,678.01x = 3,941,590,395.83
  5. Step 5: Solve for x
    x = 3,941,590,395.83/71,678.01
  6. Step 6: Final answer
    x = 54,990.23

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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.