Home / 80,639.64-111,282.12-46,647.72

Finding the Fourth Proportional to 80,639.64, 111,282.12 and 46,647.72

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Solution

The fourth proportional to 80,639.64, 111,282.12 and 46,647.72 is: 64,373.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639.64 : 111,282.12 = 46,647.72 : x
  2. Step 2: Convert to fraction form
    80,639.64/111,282.12 = 46,647.72/x
  3. Step 3: Cross multiply
    80,639.64x = 111,282.12 × 46,647.72
  4. Step 4: Simplify right side
    80,639.64x = 5,191,057,174.77
  5. Step 5: Solve for x
    x = 5,191,057,174.77/80,639.64
  6. Step 6: Final answer
    x = 64,373.52

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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.