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Finding the Fourth Proportional to 70,192.25, 105,258.40 and 40,630.49

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Solution

The fourth proportional to 70,192.25, 105,258.40 and 40,630.49 is: 60,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,192.25 : 105,258.40 = 40,630.49 : x
  2. Step 2: Convert to fraction form
    70,192.25/105,258.40 = 40,630.49/x
  3. Step 3: Cross multiply
    70,192.25x = 105,258.40 × 40,630.49
  4. Step 4: Simplify right side
    70,192.25x = 4,276,700,368.62
  5. Step 5: Solve for x
    x = 4,276,700,368.62/70,192.25
  6. Step 6: Final answer
    x = 60,928.38

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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.