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Finding the Fourth Proportional to 72,853.83, 109,280.93 and 20,263.32

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Solution

The fourth proportional to 72,853.83, 109,280.93 and 20,263.32 is: 30,395.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,853.83 : 109,280.93 = 20,263.32 : x
  2. Step 2: Convert to fraction form
    72,853.83/109,280.93 = 20,263.32/x
  3. Step 3: Cross multiply
    72,853.83x = 109,280.93 × 20,263.32
  4. Step 4: Simplify right side
    72,853.83x = 2,214,394,353.17
  5. Step 5: Solve for x
    x = 2,214,394,353.17/72,853.83
  6. Step 6: Final answer
    x = 30,395.03

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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.