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Finding the Fourth Proportional to 70,128,064.60, 105,192,096.90 and 57,373,480.60

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Solution

The fourth proportional to 70,128,064.60, 105,192,096.90 and 57,373,480.60 is: 86,060,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128,064.60 : 105,192,096.90 = 57,373,480.60 : x
  2. Step 2: Convert to fraction form
    70,128,064.60/105,192,096.90 = 57,373,480.60/x
  3. Step 3: Cross multiply
    70,128,064.60x = 105,192,096.90 × 57,373,480.60
  4. Step 4: Simplify right side
    70,128,064.60x = 6,035,236,730,765,471
  5. Step 5: Solve for x
    x = 6,035,236,730,765,471/70,128,064.60
  6. Step 6: Final answer
    x = 86,060,220.90

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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.