Home / 85,407,845.19-128,085,274.95-30,813,333.30

Finding the Fourth Proportional to 85,407,845.19, 128,085,274.95 and 30,813,333.30

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Solution

The fourth proportional to 85,407,845.19, 128,085,274.95 and 30,813,333.30 is: 46,210,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407,845.19 : 128,085,274.95 = 30,813,333.30 : x
  2. Step 2: Convert to fraction form
    85,407,845.19/128,085,274.95 = 30,813,333.30/x
  3. Step 3: Cross multiply
    85,407,845.19x = 128,085,274.95 × 30,813,333.30
  4. Step 4: Simplify right side
    85,407,845.19x = 3,946,734,267,856,491
  5. Step 5: Solve for x
    x = 3,946,734,267,856,491/85,407,845.19
  6. Step 6: Final answer
    x = 46,210,441.90

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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.