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Finding the Fourth Proportional to 70,592,904.40, 105,889,356.60 and 19,474,841.20

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Solution

The fourth proportional to 70,592,904.40, 105,889,356.60 and 19,474,841.20 is: 29,212,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,592,904.40 : 105,889,356.60 = 19,474,841.20 : x
  2. Step 2: Convert to fraction form
    70,592,904.40/105,889,356.60 = 19,474,841.20/x
  3. Step 3: Cross multiply
    70,592,904.40x = 105,889,356.60 × 19,474,841.20
  4. Step 4: Simplify right side
    70,592,904.40x = 2,062,178,404,555,171.75
  5. Step 5: Solve for x
    x = 2,062,178,404,555,171.75/70,592,904.40
  6. Step 6: Final answer
    x = 29,212,261.80

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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.