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Finding the Fourth Proportional to 72,903.80, 109,360.20 and 22,985.60

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Solution

The fourth proportional to 72,903.80, 109,360.20 and 22,985.60 is: 34,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,903.80 : 109,360.20 = 22,985.60 : x
  2. Step 2: Convert to fraction form
    72,903.80/109,360.20 = 22,985.60/x
  3. Step 3: Cross multiply
    72,903.80x = 109,360.20 × 22,985.60
  4. Step 4: Simplify right side
    72,903.80x = 2,513,709,813.12
  5. Step 5: Solve for x
    x = 2,513,709,813.12/72,903.80
  6. Step 6: Final answer
    x = 34,479.82

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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.