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Finding the Fourth Proportional to 46,687.50, 64,428.75 and 29,920.50

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Solution

The fourth proportional to 46,687.50, 64,428.75 and 29,920.50 is: 41,290.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,687.50 : 64,428.75 = 29,920.50 : x
  2. Step 2: Convert to fraction form
    46,687.50/64,428.75 = 29,920.50/x
  3. Step 3: Cross multiply
    46,687.50x = 64,428.75 × 29,920.50
  4. Step 4: Simplify right side
    46,687.50x = 1,927,740,414.38
  5. Step 5: Solve for x
    x = 1,927,740,414.38/46,687.50
  6. Step 6: Final answer
    x = 41,290.29

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1.5x scale

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.