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Finding the Fourth Proportional to 70,341.40, 105,560.70 and 50,636.80

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Solution

The fourth proportional to 70,341.40, 105,560.70 and 50,636.80 is: 75,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,341.40 : 105,560.70 = 50,636.80 : x
  2. Step 2: Convert to fraction form
    70,341.40/105,560.70 = 50,636.80/x
  3. Step 3: Cross multiply
    70,341.40x = 105,560.70 × 50,636.80
  4. Step 4: Simplify right side
    70,341.40x = 5,345,256,053.76
  5. Step 5: Solve for x
    x = 5,345,256,053.76/70,341.40
  6. Step 6: Final answer
    x = 75,990.19

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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.