Home / 90,001.47-135,021.30-30,821.25

Finding the Fourth Proportional to 90,001.47, 135,021.30 and 30,821.25

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Solution

The fourth proportional to 90,001.47, 135,021.30 and 30,821.25 is: 46,238.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,001.47 : 135,021.30 = 30,821.25 : x
  2. Step 2: Convert to fraction form
    90,001.47/135,021.30 = 30,821.25/x
  3. Step 3: Cross multiply
    90,001.47x = 135,021.30 × 30,821.25
  4. Step 4: Simplify right side
    90,001.47x = 4,161,525,242.63
  5. Step 5: Solve for x
    x = 4,161,525,242.63/90,001.47
  6. Step 6: Final answer
    x = 46,238.41

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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.