Home / 90,280.54-135,348.51-42,871.64

Finding the Fourth Proportional to 90,280.54, 135,348.51 and 42,871.64

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Solution

The fourth proportional to 90,280.54, 135,348.51 and 42,871.64 is: 64,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,280.54 : 135,348.51 = 42,871.64 : x
  2. Step 2: Convert to fraction form
    90,280.54/135,348.51 = 42,871.64/x
  3. Step 3: Cross multiply
    90,280.54x = 135,348.51 × 42,871.64
  4. Step 4: Simplify right side
    90,280.54x = 5,802,612,595.26
  5. Step 5: Solve for x
    x = 5,802,612,595.26/90,280.54
  6. Step 6: Final answer
    x = 64,273.13

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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.