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Finding the Fourth Proportional to 42,918.02, 64,361.22 and 14,830.88

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Solution

The fourth proportional to 42,918.02, 64,361.22 and 14,830.88 is: 22,240.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,918.02 : 64,361.22 = 14,830.88 : x
  2. Step 2: Convert to fraction form
    42,918.02/64,361.22 = 14,830.88/x
  3. Step 3: Cross multiply
    42,918.02x = 64,361.22 × 14,830.88
  4. Step 4: Simplify right side
    42,918.02x = 954,533,530.47
  5. Step 5: Solve for x
    x = 954,533,530.47/42,918.02
  6. Step 6: Final answer
    x = 22,240.86

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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.