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Finding the Fourth Proportional to 49,989.96, 74,955.78 and 14,920.20

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Solution

The fourth proportional to 49,989.96, 74,955.78 and 14,920.20 is: 22,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,989.96 : 74,955.78 = 14,920.20 : x
  2. Step 2: Convert to fraction form
    49,989.96/74,955.78 = 14,920.20/x
  3. Step 3: Cross multiply
    49,989.96x = 74,955.78 × 14,920.20
  4. Step 4: Simplify right side
    49,989.96x = 1,118,355,228.76
  5. Step 5: Solve for x
    x = 1,118,355,228.76/49,989.96
  6. Step 6: Final answer
    x = 22,371.60

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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.