Home / 86,178.41-118,917.12-47,931.73

Finding the Fourth Proportional to 86,178.41, 118,917.12 and 47,931.73

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Solution

The fourth proportional to 86,178.41, 118,917.12 and 47,931.73 is: 66,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,178.41 : 118,917.12 = 47,931.73 : x
  2. Step 2: Convert to fraction form
    86,178.41/118,917.12 = 47,931.73/x
  3. Step 3: Cross multiply
    86,178.41x = 118,917.12 × 47,931.73
  4. Step 4: Simplify right side
    86,178.41x = 5,699,903,170.67
  5. Step 5: Solve for x
    x = 5,699,903,170.67/86,178.41
  6. Step 6: Final answer
    x = 66,140.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.