Home / 90,415.27-135,666.63-55,335.79

Finding the Fourth Proportional to 90,415.27, 135,666.63 and 55,335.79

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Solution

The fourth proportional to 90,415.27, 135,666.63 and 55,335.79 is: 83,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,415.27 : 135,666.63 = 55,335.79 : x
  2. Step 2: Convert to fraction form
    90,415.27/135,666.63 = 55,335.79/x
  3. Step 3: Cross multiply
    90,415.27x = 135,666.63 × 55,335.79
  4. Step 4: Simplify right side
    90,415.27x = 7,507,220,147.69
  5. Step 5: Solve for x
    x = 7,507,220,147.69/90,415.27
  6. Step 6: Final answer
    x = 83,030.45

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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.