Home / 47,530.60-71,238.30-21,207.40

Finding the Fourth Proportional to 47,530.60, 71,238.30 and 21,207.40

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Solution

The fourth proportional to 47,530.60, 71,238.30 and 21,207.40 is: 31,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,530.60 : 71,238.30 = 21,207.40 : x
  2. Step 2: Convert to fraction form
    47,530.60/71,238.30 = 21,207.40/x
  3. Step 3: Cross multiply
    47,530.60x = 71,238.30 × 21,207.40
  4. Step 4: Simplify right side
    47,530.60x = 1,510,779,123.42
  5. Step 5: Solve for x
    x = 1,510,779,123.42/47,530.60
  6. Step 6: Final answer
    x = 31,785.40

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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.