Home / 47,186.40-70,779.60-20,863.20

Finding the Fourth Proportional to 47,186.40, 70,779.60 and 20,863.20

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Solution

The fourth proportional to 47,186.40, 70,779.60 and 20,863.20 is: 31,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,186.40 : 70,779.60 = 20,863.20 : x
  2. Step 2: Convert to fraction form
    47,186.40/70,779.60 = 20,863.20/x
  3. Step 3: Cross multiply
    47,186.40x = 70,779.60 × 20,863.20
  4. Step 4: Simplify right side
    47,186.40x = 1,476,688,950.72
  5. Step 5: Solve for x
    x = 1,476,688,950.72/47,186.40
  6. Step 6: Final answer
    x = 31,294.80

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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.