Home / 90,638.23-135,976.80-38,017.39

Finding the Fourth Proportional to 90,638.23, 135,976.80 and 38,017.39

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Solution

The fourth proportional to 90,638.23, 135,976.80 and 38,017.39 is: 57,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.23 : 135,976.80 = 38,017.39 : x
  2. Step 2: Convert to fraction form
    90,638.23/135,976.80 = 38,017.39/x
  3. Step 3: Cross multiply
    90,638.23x = 135,976.80 × 38,017.39
  4. Step 4: Simplify right side
    90,638.23x = 5,169,483,036.55
  5. Step 5: Solve for x
    x = 5,169,483,036.55/90,638.23
  6. Step 6: Final answer
    x = 57,034.25

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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.