Home / 90,636.24-135,973.78-38,015.40

Finding the Fourth Proportional to 90,636.24, 135,973.78 and 38,015.40

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Solution

The fourth proportional to 90,636.24, 135,973.78 and 38,015.40 is: 57,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,636.24 : 135,973.78 = 38,015.40 : x
  2. Step 2: Convert to fraction form
    90,636.24/135,973.78 = 38,015.40/x
  3. Step 3: Cross multiply
    90,636.24x = 135,973.78 × 38,015.40
  4. Step 4: Simplify right side
    90,636.24x = 5,169,097,636.21
  5. Step 5: Solve for x
    x = 5,169,097,636.21/90,636.24
  6. Step 6: Final answer
    x = 57,031.25

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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.