Home / 42,758.80-64,132.16-14,678.36

Finding the Fourth Proportional to 42,758.80, 64,132.16 and 14,678.36

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Solution

The fourth proportional to 42,758.80, 64,132.16 and 14,678.36 is: 22,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.80 : 64,132.16 = 14,678.36 : x
  2. Step 2: Convert to fraction form
    42,758.80/64,132.16 = 14,678.36/x
  3. Step 3: Cross multiply
    42,758.80x = 64,132.16 × 14,678.36
  4. Step 4: Simplify right side
    42,758.80x = 941,354,932.06
  5. Step 5: Solve for x
    x = 941,354,932.06/42,758.80
  6. Step 6: Final answer
    x = 22,015.47

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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.