Home / 61,612.06-91,972.37-54,138.70

Finding the Fourth Proportional to 61,612.06, 91,972.37 and 54,138.70

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Solution

The fourth proportional to 61,612.06, 91,972.37 and 54,138.70 is: 80,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,612.06 : 91,972.37 = 54,138.70 : x
  2. Step 2: Convert to fraction form
    61,612.06/91,972.37 = 54,138.70/x
  3. Step 3: Cross multiply
    61,612.06x = 91,972.37 × 54,138.70
  4. Step 4: Simplify right side
    61,612.06x = 4,979,264,547.72
  5. Step 5: Solve for x
    x = 4,979,264,547.72/61,612.06
  6. Step 6: Final answer
    x = 80,816.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.