Home / 39,390.35-54,378.74-30,417.71

Finding the Fourth Proportional to 39,390.35, 54,378.74 and 30,417.71

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Solution

The fourth proportional to 39,390.35, 54,378.74 and 30,417.71 is: 41,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.35 : 54,378.74 = 30,417.71 : x
  2. Step 2: Convert to fraction form
    39,390.35/54,378.74 = 30,417.71/x
  3. Step 3: Cross multiply
    39,390.35x = 54,378.74 × 30,417.71
  4. Step 4: Simplify right side
    39,390.35x = 1,654,076,547.64
  5. Step 5: Solve for x
    x = 1,654,076,547.64/39,390.35
  6. Step 6: Final answer
    x = 41,991.93

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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.