Home / 77,378,285.53-106,782,029.58-42,570,228.43

Finding the Fourth Proportional to 77,378,285.53, 106,782,029.58 and 42,570,228.43

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Solution

The fourth proportional to 77,378,285.53, 106,782,029.58 and 42,570,228.43 is: 58,746,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,378,285.53 : 106,782,029.58 = 42,570,228.43 : x
  2. Step 2: Convert to fraction form
    77,378,285.53/106,782,029.58 = 42,570,228.43/x
  3. Step 3: Cross multiply
    77,378,285.53x = 106,782,029.58 × 42,570,228.43
  4. Step 4: Simplify right side
    77,378,285.53x = 4,545,735,391,439,617
  5. Step 5: Solve for x
    x = 4,545,735,391,439,617/77,378,285.53
  6. Step 6: Final answer
    x = 58,746,912.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.