Home / 77,081,976.95-106,379,855.33-42,281,393.40

Finding the Fourth Proportional to 77,081,976.95, 106,379,855.33 and 42,281,393.40

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Solution

The fourth proportional to 77,081,976.95, 106,379,855.33 and 42,281,393.40 is: 58,352,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081,976.95 : 106,379,855.33 = 42,281,393.40 : x
  2. Step 2: Convert to fraction form
    77,081,976.95/106,379,855.33 = 42,281,393.40/x
  3. Step 3: Cross multiply
    77,081,976.95x = 106,379,855.33 × 42,281,393.40
  4. Step 4: Simplify right side
    77,081,976.95x = 4,497,888,512,831,410
  5. Step 5: Solve for x
    x = 4,497,888,512,831,410/77,081,976.95
  6. Step 6: Final answer
    x = 58,352,012.90

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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.