Home / 90,240.51-135,357.96-42,889.70

Finding the Fourth Proportional to 90,240.51, 135,357.96 and 42,889.70

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Solution

The fourth proportional to 90,240.51, 135,357.96 and 42,889.70 is: 64,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,240.51 : 135,357.96 = 42,889.70 : x
  2. Step 2: Convert to fraction form
    90,240.51/135,357.96 = 42,889.70/x
  3. Step 3: Cross multiply
    90,240.51x = 135,357.96 × 42,889.70
  4. Step 4: Simplify right side
    90,240.51x = 5,805,461,620.22
  5. Step 5: Solve for x
    x = 5,805,461,620.22/90,240.51
  6. Step 6: Final answer
    x = 64,333.21

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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.