Home / 66,470.09-91,728.73-42,629.06

Finding the Fourth Proportional to 66,470.09, 91,728.73 and 42,629.06

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Solution

The fourth proportional to 66,470.09, 91,728.73 and 42,629.06 is: 58,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,470.09 : 91,728.73 = 42,629.06 : x
  2. Step 2: Convert to fraction form
    66,470.09/91,728.73 = 42,629.06/x
  3. Step 3: Cross multiply
    66,470.09x = 91,728.73 × 42,629.06
  4. Step 4: Simplify right side
    66,470.09x = 3,910,309,534.89
  5. Step 5: Solve for x
    x = 3,910,309,534.89/66,470.09
  6. Step 6: Final answer
    x = 58,828.11

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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.