Home / 66,409.85-91,639.18-38,110.07

Finding the Fourth Proportional to 66,409.85, 91,639.18 and 38,110.07

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Solution

The fourth proportional to 66,409.85, 91,639.18 and 38,110.07 is: 52,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409.85 : 91,639.18 = 38,110.07 : x
  2. Step 2: Convert to fraction form
    66,409.85/91,639.18 = 38,110.07/x
  3. Step 3: Cross multiply
    66,409.85x = 91,639.18 × 38,110.07
  4. Step 4: Simplify right side
    66,409.85x = 3,492,375,698.37
  5. Step 5: Solve for x
    x = 3,492,375,698.37/66,409.85
  6. Step 6: Final answer
    x = 52,588.22

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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.