Home / 85,934.90-128,895.74-35,320.09

Finding the Fourth Proportional to 85,934.90, 128,895.74 and 35,320.09

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Solution

The fourth proportional to 85,934.90, 128,895.74 and 35,320.09 is: 52,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.90 : 128,895.74 = 35,320.09 : x
  2. Step 2: Convert to fraction form
    85,934.90/128,895.74 = 35,320.09/x
  3. Step 3: Cross multiply
    85,934.90x = 128,895.74 × 35,320.09
  4. Step 4: Simplify right side
    85,934.90x = 4,552,608,980.45
  5. Step 5: Solve for x
    x = 4,552,608,980.45/85,934.90
  6. Step 6: Final answer
    x = 52,977.42

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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.