Home / 90,665.60-135,998.40-40,726.40

Finding the Fourth Proportional to 90,665.60, 135,998.40 and 40,726.40

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Solution

The fourth proportional to 90,665.60, 135,998.40 and 40,726.40 is: 61,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,665.60 : 135,998.40 = 40,726.40 : x
  2. Step 2: Convert to fraction form
    90,665.60/135,998.40 = 40,726.40/x
  3. Step 3: Cross multiply
    90,665.60x = 135,998.40 × 40,726.40
  4. Step 4: Simplify right side
    90,665.60x = 5,538,725,237.76
  5. Step 5: Solve for x
    x = 5,538,725,237.76/90,665.60
  6. Step 6: Final answer
    x = 61,089.60

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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.