Home / 85,782.24-118,424.28-66,619.02

Finding the Fourth Proportional to 85,782.24, 118,424.28 and 66,619.02

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Solution

The fourth proportional to 85,782.24, 118,424.28 and 66,619.02 is: 91,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,782.24 : 118,424.28 = 66,619.02 : x
  2. Step 2: Convert to fraction form
    85,782.24/118,424.28 = 66,619.02/x
  3. Step 3: Cross multiply
    85,782.24x = 118,424.28 × 66,619.02
  4. Step 4: Simplify right side
    85,782.24x = 7,889,309,477.81
  5. Step 5: Solve for x
    x = 7,889,309,477.81/85,782.24
  6. Step 6: Final answer
    x = 91,969.03

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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.