Home / 39,421.72-54,428.52-30,330.91

Finding the Fourth Proportional to 39,421.72, 54,428.52 and 30,330.91

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Solution

The fourth proportional to 39,421.72, 54,428.52 and 30,330.91 is: 41,877.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,421.72 : 54,428.52 = 30,330.91 : x
  2. Step 2: Convert to fraction form
    39,421.72/54,428.52 = 30,330.91/x
  3. Step 3: Cross multiply
    39,421.72x = 54,428.52 × 30,330.91
  4. Step 4: Simplify right side
    39,421.72x = 1,650,866,541.55
  5. Step 5: Solve for x
    x = 1,650,866,541.55/39,421.72
  6. Step 6: Final answer
    x = 41,877.08

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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.