Home / 90,261.20-135,430.20-57,006.80

Finding the Fourth Proportional to 90,261.20, 135,430.20 and 57,006.80

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Solution

The fourth proportional to 90,261.20, 135,430.20 and 57,006.80 is: 85,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,261.20 : 135,430.20 = 57,006.80 : x
  2. Step 2: Convert to fraction form
    90,261.20/135,430.20 = 57,006.80/x
  3. Step 3: Cross multiply
    90,261.20x = 135,430.20 × 57,006.80
  4. Step 4: Simplify right side
    90,261.20x = 7,720,442,325.36
  5. Step 5: Solve for x
    x = 7,720,442,325.36/90,261.20
  6. Step 6: Final answer
    x = 85,534.45

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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.