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Finding the Fourth Proportional to 71,000.20, 106,500.30 and 70,539.40

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Solution

The fourth proportional to 71,000.20, 106,500.30 and 70,539.40 is: 105,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,000.20 : 106,500.30 = 70,539.40 : x
  2. Step 2: Convert to fraction form
    71,000.20/106,500.30 = 70,539.40/x
  3. Step 3: Cross multiply
    71,000.20x = 106,500.30 × 70,539.40
  4. Step 4: Simplify right side
    71,000.20x = 7,512,467,261.82
  5. Step 5: Solve for x
    x = 7,512,467,261.82/71,000.20
  6. Step 6: Final answer
    x = 105,809.10

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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.