Home / 86,009.28-118,692.72-48,283.60

Finding the Fourth Proportional to 86,009.28, 118,692.72 and 48,283.60

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Solution

The fourth proportional to 86,009.28, 118,692.72 and 48,283.60 is: 66,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,009.28 : 118,692.72 = 48,283.60 : x
  2. Step 2: Convert to fraction form
    86,009.28/118,692.72 = 48,283.60/x
  3. Step 3: Cross multiply
    86,009.28x = 118,692.72 × 48,283.60
  4. Step 4: Simplify right side
    86,009.28x = 5,730,911,815.39
  5. Step 5: Solve for x
    x = 5,730,911,815.39/86,009.28
  6. Step 6: Final answer
    x = 66,631.32

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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.