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Finding the Fourth Proportional to 71,405.40, 107,108.10 and 60,000.60

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Solution

The fourth proportional to 71,405.40, 107,108.10 and 60,000.60 is: 90,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,405.40 : 107,108.10 = 60,000.60 : x
  2. Step 2: Convert to fraction form
    71,405.40/107,108.10 = 60,000.60/x
  3. Step 3: Cross multiply
    71,405.40x = 107,108.10 × 60,000.60
  4. Step 4: Simplify right side
    71,405.40x = 6,426,550,264.86
  5. Step 5: Solve for x
    x = 6,426,550,264.86/71,405.40
  6. Step 6: Final answer
    x = 90,000.90

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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.