Home / 85,805,998.10-128,671,672.35-28,276,039.70

Finding the Fourth Proportional to 85,805,998.10, 128,671,672.35 and 28,276,039.70

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Solution

The fourth proportional to 85,805,998.10, 128,671,672.35 and 28,276,039.70 is: 42,401,759.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,805,998.10 : 128,671,672.35 = 28,276,039.70 : x
  2. Step 2: Convert to fraction form
    85,805,998.10/128,671,672.35 = 28,276,039.70/x
  3. Step 3: Cross multiply
    85,805,998.10x = 128,671,672.35 × 28,276,039.70
  4. Step 4: Simplify right side
    85,805,998.10x = 3,638,325,315,633,992
  5. Step 5: Solve for x
    x = 3,638,325,315,633,992/85,805,998.10
  6. Step 6: Final answer
    x = 42,401,759.74

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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.