Home / 42,902.16-64,327.20-19,205.28

Finding the Fourth Proportional to 42,902.16, 64,327.20 and 19,205.28

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Solution

The fourth proportional to 42,902.16, 64,327.20 and 19,205.28 is: 28,796.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,902.16 : 64,327.20 = 19,205.28 : x
  2. Step 2: Convert to fraction form
    42,902.16/64,327.20 = 19,205.28/x
  3. Step 3: Cross multiply
    42,902.16x = 64,327.20 × 19,205.28
  4. Step 4: Simplify right side
    42,902.16x = 1,235,421,887.62
  5. Step 5: Solve for x
    x = 1,235,421,887.62/42,902.16
  6. Step 6: Final answer
    x = 28,796.26

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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.