Home / 39,520.74-54,558.45-30,547.98

Finding the Fourth Proportional to 39,520.74, 54,558.45 and 30,547.98

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Solution

The fourth proportional to 39,520.74, 54,558.45 and 30,547.98 is: 42,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,520.74 : 54,558.45 = 30,547.98 : x
  2. Step 2: Convert to fraction form
    39,520.74/54,558.45 = 30,547.98/x
  3. Step 3: Cross multiply
    39,520.74x = 54,558.45 × 30,547.98
  4. Step 4: Simplify right side
    39,520.74x = 1,666,650,439.43
  5. Step 5: Solve for x
    x = 1,666,650,439.43/39,520.74
  6. Step 6: Final answer
    x = 42,171.54

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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.