Home / 72,813,946.35-109,220,919.53-66,578,371.95

Finding the Fourth Proportional to 72,813,946.35, 109,220,919.53 and 66,578,371.95

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Solution

The fourth proportional to 72,813,946.35, 109,220,919.53 and 66,578,371.95 is: 99,867,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,813,946.35 : 109,220,919.53 = 66,578,371.95 : x
  2. Step 2: Convert to fraction form
    72,813,946.35/109,220,919.53 = 66,578,371.95/x
  3. Step 3: Cross multiply
    72,813,946.35x = 109,220,919.53 × 66,578,371.95
  4. Step 4: Simplify right side
    72,813,946.35x = 7,271,751,004,856,468
  5. Step 5: Solve for x
    x = 7,271,751,004,856,468/72,813,946.35
  6. Step 6: Final answer
    x = 99,867,557.93

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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.