Home / 39,013.35-53,857.61-30,500.45

Finding the Fourth Proportional to 39,013.35, 53,857.61 and 30,500.45

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Solution

The fourth proportional to 39,013.35, 53,857.61 and 30,500.45 is: 42,105.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,013.35 : 53,857.61 = 30,500.45 : x
  2. Step 2: Convert to fraction form
    39,013.35/53,857.61 = 30,500.45/x
  3. Step 3: Cross multiply
    39,013.35x = 53,857.61 × 30,500.45
  4. Step 4: Simplify right side
    39,013.35x = 1,642,681,235.48
  5. Step 5: Solve for x
    x = 1,642,681,235.48/39,013.35
  6. Step 6: Final answer
    x = 42,105.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.