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Finding the Fourth Proportional to 70,600.80, 105,901.20 and 67,490.40

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Solution

The fourth proportional to 70,600.80, 105,901.20 and 67,490.40 is: 101,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,600.80 : 105,901.20 = 67,490.40 : x
  2. Step 2: Convert to fraction form
    70,600.80/105,901.20 = 67,490.40/x
  3. Step 3: Cross multiply
    70,600.80x = 105,901.20 × 67,490.40
  4. Step 4: Simplify right side
    70,600.80x = 7,147,314,348.48
  5. Step 5: Solve for x
    x = 7,147,314,348.48/70,600.80
  6. Step 6: Final answer
    x = 101,235.60

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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.