Home / 90,675.40-135,948.30-40,714.60

Finding the Fourth Proportional to 90,675.40, 135,948.30 and 40,714.60

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Solution

The fourth proportional to 90,675.40, 135,948.30 and 40,714.60 is: 61,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675.40 : 135,948.30 = 40,714.60 : x
  2. Step 2: Convert to fraction form
    90,675.40/135,948.30 = 40,714.60/x
  3. Step 3: Cross multiply
    90,675.40x = 135,948.30 × 40,714.60
  4. Step 4: Simplify right side
    90,675.40x = 5,535,080,655.18
  5. Step 5: Solve for x
    x = 5,535,080,655.18/90,675.40
  6. Step 6: Final answer
    x = 61,042.80

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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.