Home / 85,548,662.40-128,354,486.40-28,042,809.60

Finding the Fourth Proportional to 85,548,662.40, 128,354,486.40 and 28,042,809.60

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Solution

The fourth proportional to 85,548,662.40, 128,354,486.40 and 28,042,809.60 is: 42,074,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,548,662.40 : 128,354,486.40 = 28,042,809.60 : x
  2. Step 2: Convert to fraction form
    85,548,662.40/128,354,486.40 = 28,042,809.60/x
  3. Step 3: Cross multiply
    85,548,662.40x = 128,354,486.40 × 28,042,809.60
  4. Step 4: Simplify right side
    85,548,662.40x = 3,599,420,423,420,990
  5. Step 5: Solve for x
    x = 3,599,420,423,420,990/85,548,662.40
  6. Step 6: Final answer
    x = 42,074,537.72

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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.