Home / 90,332.10-135,443.43-40,402.89

Finding the Fourth Proportional to 90,332.10, 135,443.43 and 40,402.89

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Solution

The fourth proportional to 90,332.10, 135,443.43 and 40,402.89 is: 60,579.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.10 : 135,443.43 = 40,402.89 : x
  2. Step 2: Convert to fraction form
    90,332.10/135,443.43 = 40,402.89/x
  3. Step 3: Cross multiply
    90,332.10x = 135,443.43 × 40,402.89
  4. Step 4: Simplify right side
    90,332.10x = 5,472,306,003.51
  5. Step 5: Solve for x
    x = 5,472,306,003.51/90,332.10
  6. Step 6: Final answer
    x = 60,579.86

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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.