Home / 66,055.19-91,155.92-39,219.75

Finding the Fourth Proportional to 66,055.19, 91,155.92 and 39,219.75

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Solution

The fourth proportional to 66,055.19, 91,155.92 and 39,219.75 is: 54,123.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,055.19 : 91,155.92 = 39,219.75 : x
  2. Step 2: Convert to fraction form
    66,055.19/91,155.92 = 39,219.75/x
  3. Step 3: Cross multiply
    66,055.19x = 91,155.92 × 39,219.75
  4. Step 4: Simplify right side
    66,055.19x = 3,575,112,197.32
  5. Step 5: Solve for x
    x = 3,575,112,197.32/66,055.19
  6. Step 6: Final answer
    x = 54,123.11

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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.