Home / 42,991.77-64,480.35-19,612.74

Finding the Fourth Proportional to 42,991.77, 64,480.35 and 19,612.74

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Solution

The fourth proportional to 42,991.77, 64,480.35 and 19,612.74 is: 29,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,991.77 : 64,480.35 = 19,612.74 : x
  2. Step 2: Convert to fraction form
    42,991.77/64,480.35 = 19,612.74/x
  3. Step 3: Cross multiply
    42,991.77x = 64,480.35 × 19,612.74
  4. Step 4: Simplify right side
    42,991.77x = 1,264,636,339.66
  5. Step 5: Solve for x
    x = 1,264,636,339.66/42,991.77
  6. Step 6: Final answer
    x = 29,415.78

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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.