Home / 86,119.20-118,830.13-47,877.68

Finding the Fourth Proportional to 86,119.20, 118,830.13 and 47,877.68

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Solution

The fourth proportional to 86,119.20, 118,830.13 and 47,877.68 is: 66,063.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,119.20 : 118,830.13 = 47,877.68 : x
  2. Step 2: Convert to fraction form
    86,119.20/118,830.13 = 47,877.68/x
  3. Step 3: Cross multiply
    86,119.20x = 118,830.13 × 47,877.68
  4. Step 4: Simplify right side
    86,119.20x = 5,689,310,938.50
  5. Step 5: Solve for x
    x = 5,689,310,938.50/86,119.20
  6. Step 6: Final answer
    x = 66,063.21

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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.