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Finding the Fourth Proportional to 46,045.52, 69,045.96 and 21,078.08

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Solution

The fourth proportional to 46,045.52, 69,045.96 and 21,078.08 is: 31,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,045.52 : 69,045.96 = 21,078.08 : x
  2. Step 2: Convert to fraction form
    46,045.52/69,045.96 = 21,078.08/x
  3. Step 3: Cross multiply
    46,045.52x = 69,045.96 × 21,078.08
  4. Step 4: Simplify right side
    46,045.52x = 1,455,356,268.56
  5. Step 5: Solve for x
    x = 1,455,356,268.56/46,045.52
  6. Step 6: Final answer
    x = 31,606.90

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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.