Home / 48,259.80-72,386.10-20,172.60

Finding the Fourth Proportional to 48,259.80, 72,386.10 and 20,172.60

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Solution

The fourth proportional to 48,259.80, 72,386.10 and 20,172.60 is: 30,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,259.80 : 72,386.10 = 20,172.60 : x
  2. Step 2: Convert to fraction form
    48,259.80/72,386.10 = 20,172.60/x
  3. Step 3: Cross multiply
    48,259.80x = 72,386.10 × 20,172.60
  4. Step 4: Simplify right side
    48,259.80x = 1,460,215,840.86
  5. Step 5: Solve for x
    x = 1,460,215,840.86/48,259.80
  6. Step 6: Final answer
    x = 30,257.40

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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.