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Finding the Fourth Proportional to 70,058.40, 105,087.60 and 67,336.80

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Solution

The fourth proportional to 70,058.40, 105,087.60 and 67,336.80 is: 101,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,058.40 : 105,087.60 = 67,336.80 : x
  2. Step 2: Convert to fraction form
    70,058.40/105,087.60 = 67,336.80/x
  3. Step 3: Cross multiply
    70,058.40x = 105,087.60 × 67,336.80
  4. Step 4: Simplify right side
    70,058.40x = 7,076,262,703.68
  5. Step 5: Solve for x
    x = 7,076,262,703.68/70,058.40
  6. Step 6: Final answer
    x = 101,005.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.