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Finding the Fourth Proportional to 46,978.09, 70,470.45 and 18,898.32

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Solution

The fourth proportional to 46,978.09, 70,470.45 and 18,898.32 is: 28,348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,978.09 : 70,470.45 = 18,898.32 : x
  2. Step 2: Convert to fraction form
    46,978.09/70,470.45 = 18,898.32/x
  3. Step 3: Cross multiply
    46,978.09x = 70,470.45 × 18,898.32
  4. Step 4: Simplify right side
    46,978.09x = 1,331,773,114.64
  5. Step 5: Solve for x
    x = 1,331,773,114.64/46,978.09
  6. Step 6: Final answer
    x = 28,348.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.