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Finding the Fourth Proportional to 70,685,798.40, 106,028,697.60 and 52,545,945.60

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Solution

The fourth proportional to 70,685,798.40, 106,028,697.60 and 52,545,945.60 is: 78,818,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,685,798.40 : 106,028,697.60 = 52,545,945.60 : x
  2. Step 2: Convert to fraction form
    70,685,798.40/106,028,697.60 = 52,545,945.60/x
  3. Step 3: Cross multiply
    70,685,798.40x = 106,028,697.60 × 52,545,945.60
  4. Step 4: Simplify right side
    70,685,798.40x = 5,571,378,176,128,450
  5. Step 5: Solve for x
    x = 5,571,378,176,128,450/70,685,798.40
  6. Step 6: Final answer
    x = 78,818,918.40

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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.