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Finding the Fourth Proportional to 54,400.80, 81,698.40 and 39,626.40

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Solution

The fourth proportional to 54,400.80, 81,698.40 and 39,626.40 is: 59,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,400.80 : 81,698.40 = 39,626.40 : x
  2. Step 2: Convert to fraction form
    54,400.80/81,698.40 = 39,626.40/x
  3. Step 3: Cross multiply
    54,400.80x = 81,698.40 × 39,626.40
  4. Step 4: Simplify right side
    54,400.80x = 3,237,413,477.76
  5. Step 5: Solve for x
    x = 3,237,413,477.76/54,400.80
  6. Step 6: Final answer
    x = 59,510.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.