Home / 66,689.60-92,121.50-53,356.19

Finding the Fourth Proportional to 66,689.60, 92,121.50 and 53,356.19

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Solution

The fourth proportional to 66,689.60, 92,121.50 and 53,356.19 is: 73,703.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.60 : 92,121.50 = 53,356.19 : x
  2. Step 2: Convert to fraction form
    66,689.60/92,121.50 = 53,356.19/x
  3. Step 3: Cross multiply
    66,689.60x = 92,121.50 × 53,356.19
  4. Step 4: Simplify right side
    66,689.60x = 4,915,251,929.87
  5. Step 5: Solve for x
    x = 4,915,251,929.87/66,689.60
  6. Step 6: Final answer
    x = 73,703.43

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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.