Home / 85,548,679.40-128,354,511.90-28,042,826.60

Finding the Fourth Proportional to 85,548,679.40, 128,354,511.90 and 28,042,826.60

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Solution

The fourth proportional to 85,548,679.40, 128,354,511.90 and 28,042,826.60 is: 42,074,563.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,548,679.40 : 128,354,511.90 = 28,042,826.60 : x
  2. Step 2: Convert to fraction form
    85,548,679.40/128,354,511.90 = 28,042,826.60/x
  3. Step 3: Cross multiply
    85,548,679.40x = 128,354,511.90 × 28,042,826.60
  4. Step 4: Simplify right side
    85,548,679.40x = 3,599,423,320,539,337
  5. Step 5: Solve for x
    x = 3,599,423,320,539,337/85,548,679.40
  6. Step 6: Final answer
    x = 42,074,563.23

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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.