Home / 90,515.40-135,748.80-37,930.20

Finding the Fourth Proportional to 90,515.40, 135,748.80 and 37,930.20

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Solution

The fourth proportional to 90,515.40, 135,748.80 and 37,930.20 is: 56,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,515.40 : 135,748.80 = 37,930.20 : x
  2. Step 2: Convert to fraction form
    90,515.40/135,748.80 = 37,930.20/x
  3. Step 3: Cross multiply
    90,515.40x = 135,748.80 × 37,930.20
  4. Step 4: Simplify right side
    90,515.40x = 5,148,979,133.76
  5. Step 5: Solve for x
    x = 5,148,979,133.76/90,515.40
  6. Step 6: Final answer
    x = 56,885.12

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1.5x scale

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.