Home / 81,479.10-122,218.65-46,487.10

Finding the Fourth Proportional to 81,479.10, 122,218.65 and 46,487.10

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Solution

The fourth proportional to 81,479.10, 122,218.65 and 46,487.10 is: 69,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.10 : 122,218.65 = 46,487.10 : x
  2. Step 2: Convert to fraction form
    81,479.10/122,218.65 = 46,487.10/x
  3. Step 3: Cross multiply
    81,479.10x = 122,218.65 × 46,487.10
  4. Step 4: Simplify right side
    81,479.10x = 5,681,590,604.42
  5. Step 5: Solve for x
    x = 5,681,590,604.42/81,479.10
  6. Step 6: Final answer
    x = 69,730.65

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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.