Home / 85,478.40-117,918.72-60,272.64

Finding the Fourth Proportional to 85,478.40, 117,918.72 and 60,272.64

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Solution

The fourth proportional to 85,478.40, 117,918.72 and 60,272.64 is: 83,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,478.40 : 117,918.72 = 60,272.64 : x
  2. Step 2: Convert to fraction form
    85,478.40/117,918.72 = 60,272.64/x
  3. Step 3: Cross multiply
    85,478.40x = 117,918.72 × 60,272.64
  4. Step 4: Simplify right side
    85,478.40x = 7,107,272,559.82
  5. Step 5: Solve for x
    x = 7,107,272,559.82/85,478.40
  6. Step 6: Final answer
    x = 83,147.00

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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.