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Finding the Fourth Proportional to 70,372,005.30, 105,558,007.95 and 70,372,005.30

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Solution

The fourth proportional to 70,372,005.30, 105,558,007.95 and 70,372,005.30 is: 105,558,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,372,005.30 : 105,558,007.95 = 70,372,005.30 : x
  2. Step 2: Convert to fraction form
    70,372,005.30/105,558,007.95 = 70,372,005.30/x
  3. Step 3: Cross multiply
    70,372,005.30x = 105,558,007.95 × 70,372,005.30
  4. Step 4: Simplify right side
    70,372,005.30x = 7,428,328,694,914,842
  5. Step 5: Solve for x
    x = 7,428,328,694,914,842/70,372,005.30
  6. Step 6: Final answer
    x = 105,558,007.95

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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.