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Finding the Fourth Proportional to 72,203.79, 108,259.55 and 34,689.23

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Solution

The fourth proportional to 72,203.79, 108,259.55 and 34,689.23 is: 52,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,203.79 : 108,259.55 = 34,689.23 : x
  2. Step 2: Convert to fraction form
    72,203.79/108,259.55 = 34,689.23/x
  3. Step 3: Cross multiply
    72,203.79x = 108,259.55 × 34,689.23
  4. Step 4: Simplify right side
    72,203.79x = 3,755,439,714.90
  5. Step 5: Solve for x
    x = 3,755,439,714.90/72,203.79
  6. Step 6: Final answer
    x = 52,011.67

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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.