Home / 42,750.81-64,091.63-17,809.60

Finding the Fourth Proportional to 42,750.81, 64,091.63 and 17,809.60

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Solution

The fourth proportional to 42,750.81, 64,091.63 and 17,809.60 is: 26,699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,750.81 : 64,091.63 = 17,809.60 : x
  2. Step 2: Convert to fraction form
    42,750.81/64,091.63 = 17,809.60/x
  3. Step 3: Cross multiply
    42,750.81x = 64,091.63 × 17,809.60
  4. Step 4: Simplify right side
    42,750.81x = 1,141,446,067.77
  5. Step 5: Solve for x
    x = 1,141,446,067.77/42,750.81
  6. Step 6: Final answer
    x = 26,699.99

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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.