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Finding the Fourth Proportional to 86,458.95, 129,677.49 and 27,300.60

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Solution

The fourth proportional to 86,458.95, 129,677.49 and 27,300.60 is: 40,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,458.95 : 129,677.49 = 27,300.60 : x
  2. Step 2: Convert to fraction form
    86,458.95/129,677.49 = 27,300.60/x
  3. Step 3: Cross multiply
    86,458.95x = 129,677.49 × 27,300.60
  4. Step 4: Simplify right side
    86,458.95x = 3,540,273,283.49
  5. Step 5: Solve for x
    x = 3,540,273,283.49/86,458.95
  6. Step 6: Final answer
    x = 40,947.45

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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.