Home / 90,443.89-135,646.26-57,119.41

Finding the Fourth Proportional to 90,443.89, 135,646.26 and 57,119.41

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Solution

The fourth proportional to 90,443.89, 135,646.26 and 57,119.41 is: 85,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,443.89 : 135,646.26 = 57,119.41 : x
  2. Step 2: Convert to fraction form
    90,443.89/135,646.26 = 57,119.41/x
  3. Step 3: Cross multiply
    90,443.89x = 135,646.26 × 57,119.41
  4. Step 4: Simplify right side
    90,443.89x = 7,748,034,339.91
  5. Step 5: Solve for x
    x = 7,748,034,339.91/90,443.89
  6. Step 6: Final answer
    x = 85,666.75

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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.