Home / 31,421.16-47,042.64-28,464.96

Finding the Fourth Proportional to 31,421.16, 47,042.64 and 28,464.96

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Solution

The fourth proportional to 31,421.16, 47,042.64 and 28,464.96 is: 42,616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.16 : 47,042.64 = 28,464.96 : x
  2. Step 2: Convert to fraction form
    31,421.16/47,042.64 = 28,464.96/x
  3. Step 3: Cross multiply
    31,421.16x = 47,042.64 × 28,464.96
  4. Step 4: Simplify right side
    31,421.16x = 1,339,066,865.89
  5. Step 5: Solve for x
    x = 1,339,066,865.89/31,421.16
  6. Step 6: Final answer
    x = 42,616.72

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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.