Home / 48,114.40-72,133.20-20,389.60

Finding the Fourth Proportional to 48,114.40, 72,133.20 and 20,389.60

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Solution

The fourth proportional to 48,114.40, 72,133.20 and 20,389.60 is: 30,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,114.40 : 72,133.20 = 20,389.60 : x
  2. Step 2: Convert to fraction form
    48,114.40/72,133.20 = 20,389.60/x
  3. Step 3: Cross multiply
    48,114.40x = 72,133.20 × 20,389.60
  4. Step 4: Simplify right side
    48,114.40x = 1,470,767,094.72
  5. Step 5: Solve for x
    x = 1,470,767,094.72/48,114.40
  6. Step 6: Final answer
    x = 30,568.13

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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.