Home / 54,685.20-81,809.10-47,370.90

Finding the Fourth Proportional to 54,685.20, 81,809.10 and 47,370.90

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Solution

The fourth proportional to 54,685.20, 81,809.10 and 47,370.90 is: 70,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,685.20 : 81,809.10 = 47,370.90 : x
  2. Step 2: Convert to fraction form
    54,685.20/81,809.10 = 47,370.90/x
  3. Step 3: Cross multiply
    54,685.20x = 81,809.10 × 47,370.90
  4. Step 4: Simplify right side
    54,685.20x = 3,875,370,695.19
  5. Step 5: Solve for x
    x = 3,875,370,695.19/54,685.20
  6. Step 6: Final answer
    x = 70,866.90

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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.