Home / 85,242.56-117,633.12-53,429.12

Finding the Fourth Proportional to 85,242.56, 117,633.12 and 53,429.12

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Solution

The fourth proportional to 85,242.56, 117,633.12 and 53,429.12 is: 73,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,242.56 : 117,633.12 = 53,429.12 : x
  2. Step 2: Convert to fraction form
    85,242.56/117,633.12 = 53,429.12/x
  3. Step 3: Cross multiply
    85,242.56x = 117,633.12 × 53,429.12
  4. Step 4: Simplify right side
    85,242.56x = 6,285,034,084.45
  5. Step 5: Solve for x
    x = 6,285,034,084.45/85,242.56
  6. Step 6: Final answer
    x = 73,731.17

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1.5x scale

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.