Home / 85,714.20-118,284.30-47,989.80

Finding the Fourth Proportional to 85,714.20, 118,284.30 and 47,989.80

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Solution

The fourth proportional to 85,714.20, 118,284.30 and 47,989.80 is: 66,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,714.20 : 118,284.30 = 47,989.80 : x
  2. Step 2: Convert to fraction form
    85,714.20/118,284.30 = 47,989.80/x
  3. Step 3: Cross multiply
    85,714.20x = 118,284.30 × 47,989.80
  4. Step 4: Simplify right side
    85,714.20x = 5,676,439,900.14
  5. Step 5: Solve for x
    x = 5,676,439,900.14/85,714.20
  6. Step 6: Final answer
    x = 66,225.20

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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.