Home / 49,659.90-74,490.66-12,220.08

Finding the Fourth Proportional to 49,659.90, 74,490.66 and 12,220.08

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Solution

The fourth proportional to 49,659.90, 74,490.66 and 12,220.08 is: 18,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,659.90 : 74,490.66 = 12,220.08 : x
  2. Step 2: Convert to fraction form
    49,659.90/74,490.66 = 12,220.08/x
  3. Step 3: Cross multiply
    49,659.90x = 74,490.66 × 12,220.08
  4. Step 4: Simplify right side
    49,659.90x = 910,281,824.45
  5. Step 5: Solve for x
    x = 910,281,824.45/49,659.90
  6. Step 6: Final answer
    x = 18,330.32

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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.