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Finding the Fourth Proportional to 70,269, 105,237.78 and 60,984.78

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Solution

The fourth proportional to 70,269, 105,237.78 and 60,984.78 is: 91,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,269 : 105,237.78 = 60,984.78 : x
  2. Step 2: Convert to fraction form
    70,269/105,237.78 = 60,984.78/x
  3. Step 3: Cross multiply
    70,269x = 105,237.78 × 60,984.78
  4. Step 4: Simplify right side
    70,269x = 6,417,902,860.99
  5. Step 5: Solve for x
    x = 6,417,902,860.99/70,269
  6. Step 6: Final answer
    x = 91,333.35

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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.