Home / 51,438.66-70,988.67-28,779.72

Finding the Fourth Proportional to 51,438.66, 70,988.67 and 28,779.72

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Solution

The fourth proportional to 51,438.66, 70,988.67 and 28,779.72 is: 39,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.66 : 70,988.67 = 28,779.72 : x
  2. Step 2: Convert to fraction form
    51,438.66/70,988.67 = 28,779.72/x
  3. Step 3: Cross multiply
    51,438.66x = 70,988.67 × 28,779.72
  4. Step 4: Simplify right side
    51,438.66x = 2,043,034,045.77
  5. Step 5: Solve for x
    x = 2,043,034,045.77/51,438.66
  6. Step 6: Final answer
    x = 39,717.87

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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.