Home / 90,637.20-135,955.80-57,176.10

Finding the Fourth Proportional to 90,637.20, 135,955.80 and 57,176.10

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Solution

The fourth proportional to 90,637.20, 135,955.80 and 57,176.10 is: 85,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,637.20 : 135,955.80 = 57,176.10 : x
  2. Step 2: Convert to fraction form
    90,637.20/135,955.80 = 57,176.10/x
  3. Step 3: Cross multiply
    90,637.20x = 135,955.80 × 57,176.10
  4. Step 4: Simplify right side
    90,637.20x = 7,773,422,416.38
  5. Step 5: Solve for x
    x = 7,773,422,416.38/90,637.20
  6. Step 6: Final answer
    x = 85,764.15

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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.