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Finding the Fourth Proportional to 85,498.90, 128,262.39 and 26,334.58

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Solution

The fourth proportional to 85,498.90, 128,262.39 and 26,334.58 is: 39,506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,498.90 : 128,262.39 = 26,334.58 : x
  2. Step 2: Convert to fraction form
    85,498.90/128,262.39 = 26,334.58/x
  3. Step 3: Cross multiply
    85,498.90x = 128,262.39 × 26,334.58
  4. Step 4: Simplify right side
    85,498.90x = 3,377,736,170.45
  5. Step 5: Solve for x
    x = 3,377,736,170.45/85,498.90
  6. Step 6: Final answer
    x = 39,506.19

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1.5x scale

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.