Home / 42,778.54-64,166.72-11,612.98

Finding the Fourth Proportional to 42,778.54, 64,166.72 and 11,612.98

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Solution

The fourth proportional to 42,778.54, 64,166.72 and 11,612.98 is: 17,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.54 : 64,166.72 = 11,612.98 : x
  2. Step 2: Convert to fraction form
    42,778.54/64,166.72 = 11,612.98/x
  3. Step 3: Cross multiply
    42,778.54x = 64,166.72 × 11,612.98
  4. Step 4: Simplify right side
    42,778.54x = 745,166,836.03
  5. Step 5: Solve for x
    x = 745,166,836.03/42,778.54
  6. Step 6: Final answer
    x = 17,419.17

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1.5x scale

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.