Home / 85,935.60-128,909.54-35,965.38

Finding the Fourth Proportional to 85,935.60, 128,909.54 and 35,965.38

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Solution

The fourth proportional to 85,935.60, 128,909.54 and 35,965.38 is: 53,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,935.60 : 128,909.54 = 35,965.38 : x
  2. Step 2: Convert to fraction form
    85,935.60/128,909.54 = 35,965.38/x
  3. Step 3: Cross multiply
    85,935.60x = 128,909.54 × 35,965.38
  4. Step 4: Simplify right side
    85,935.60x = 4,636,280,591.73
  5. Step 5: Solve for x
    x = 4,636,280,591.73/85,935.60
  6. Step 6: Final answer
    x = 53,950.64

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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.