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Finding the Fourth Proportional to 42,442.72, 63,664.16 and 14,740.80

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Solution

The fourth proportional to 42,442.72, 63,664.16 and 14,740.80 is: 22,111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,442.72 : 63,664.16 = 14,740.80 : x
  2. Step 2: Convert to fraction form
    42,442.72/63,664.16 = 14,740.80/x
  3. Step 3: Cross multiply
    42,442.72x = 63,664.16 × 14,740.80
  4. Step 4: Simplify right side
    42,442.72x = 938,460,649.73
  5. Step 5: Solve for x
    x = 938,460,649.73/42,442.72
  6. Step 6: Final answer
    x = 22,111.23

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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.