Home / 66,205.18-91,392.60-39,356.38

Finding the Fourth Proportional to 66,205.18, 91,392.60 and 39,356.38

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Solution

The fourth proportional to 66,205.18, 91,392.60 and 39,356.38 is: 54,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.18 : 91,392.60 = 39,356.38 : x
  2. Step 2: Convert to fraction form
    66,205.18/91,392.60 = 39,356.38/x
  3. Step 3: Cross multiply
    66,205.18x = 91,392.60 × 39,356.38
  4. Step 4: Simplify right side
    66,205.18x = 3,596,881,894.79
  5. Step 5: Solve for x
    x = 3,596,881,894.79/66,205.18
  6. Step 6: Final answer
    x = 54,329.31

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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.