Home / 78,664.58-108,557.24-42,853.67

Finding the Fourth Proportional to 78,664.58, 108,557.24 and 42,853.67

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Solution

The fourth proportional to 78,664.58, 108,557.24 and 42,853.67 is: 59,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,664.58 : 108,557.24 = 42,853.67 : x
  2. Step 2: Convert to fraction form
    78,664.58/108,557.24 = 42,853.67/x
  3. Step 3: Cross multiply
    78,664.58x = 108,557.24 × 42,853.67
  4. Step 4: Simplify right side
    78,664.58x = 4,652,075,382.02
  5. Step 5: Solve for x
    x = 4,652,075,382.02/78,664.58
  6. Step 6: Final answer
    x = 59,138.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.