Home / 42,897.12-64,322.64-19,528.80

Finding the Fourth Proportional to 42,897.12, 64,322.64 and 19,528.80

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Solution

The fourth proportional to 42,897.12, 64,322.64 and 19,528.80 is: 29,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,897.12 : 64,322.64 = 19,528.80 : x
  2. Step 2: Convert to fraction form
    42,897.12/64,322.64 = 19,528.80/x
  3. Step 3: Cross multiply
    42,897.12x = 64,322.64 × 19,528.80
  4. Step 4: Simplify right side
    42,897.12x = 1,256,143,972.03
  5. Step 5: Solve for x
    x = 1,256,143,972.03/42,897.12
  6. Step 6: Final answer
    x = 29,282.71

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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.