Home / 42,977.03-64,465.99-12,991.52

Finding the Fourth Proportional to 42,977.03, 64,465.99 and 12,991.52

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Solution

The fourth proportional to 42,977.03, 64,465.99 and 12,991.52 is: 19,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,977.03 : 64,465.99 = 12,991.52 : x
  2. Step 2: Convert to fraction form
    42,977.03/64,465.99 = 12,991.52/x
  3. Step 3: Cross multiply
    42,977.03x = 64,465.99 × 12,991.52
  4. Step 4: Simplify right side
    42,977.03x = 837,510,843.60
  5. Step 5: Solve for x
    x = 837,510,843.60/42,977.03
  6. Step 6: Final answer
    x = 19,487.41

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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.