Home / 66,130.24-91,219.44-39,254.56

Finding the Fourth Proportional to 66,130.24, 91,219.44 and 39,254.56

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Solution

The fourth proportional to 66,130.24, 91,219.44 and 39,254.56 is: 54,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130.24 : 91,219.44 = 39,254.56 : x
  2. Step 2: Convert to fraction form
    66,130.24/91,219.44 = 39,254.56/x
  3. Step 3: Cross multiply
    66,130.24x = 91,219.44 × 39,254.56
  4. Step 4: Simplify right side
    66,130.24x = 3,580,778,980.65
  5. Step 5: Solve for x
    x = 3,580,778,980.65/66,130.24
  6. Step 6: Final answer
    x = 54,147.38

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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.