Home / 81,664.40-112,689.96-45,851.60

Finding the Fourth Proportional to 81,664.40, 112,689.96 and 45,851.60

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Solution

The fourth proportional to 81,664.40, 112,689.96 and 45,851.60 is: 63,271.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664.40 : 112,689.96 = 45,851.60 : x
  2. Step 2: Convert to fraction form
    81,664.40/112,689.96 = 45,851.60/x
  3. Step 3: Cross multiply
    81,664.40x = 112,689.96 × 45,851.60
  4. Step 4: Simplify right side
    81,664.40x = 5,167,014,969.94
  5. Step 5: Solve for x
    x = 5,167,014,969.94/81,664.40
  6. Step 6: Final answer
    x = 63,271.33

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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.