Home / 80,640.08-111,271.08-44,830.40

Finding the Fourth Proportional to 80,640.08, 111,271.08 and 44,830.40

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Solution

The fourth proportional to 80,640.08, 111,271.08 and 44,830.40 is: 61,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.08 : 111,271.08 = 44,830.40 : x
  2. Step 2: Convert to fraction form
    80,640.08/111,271.08 = 44,830.40/x
  3. Step 3: Cross multiply
    80,640.08x = 111,271.08 × 44,830.40
  4. Step 4: Simplify right side
    80,640.08x = 4,988,327,024.83
  5. Step 5: Solve for x
    x = 4,988,327,024.83/80,640.08
  6. Step 6: Final answer
    x = 61,859.15

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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.