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Finding the Fourth Proportional to 86,297.94, 129,478.08 and 30,146.34

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Solution

The fourth proportional to 86,297.94, 129,478.08 and 30,146.34 is: 45,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,297.94 : 129,478.08 = 30,146.34 : x
  2. Step 2: Convert to fraction form
    86,297.94/129,478.08 = 30,146.34/x
  3. Step 3: Cross multiply
    86,297.94x = 129,478.08 × 30,146.34
  4. Step 4: Simplify right side
    86,297.94x = 3,903,290,222.23
  5. Step 5: Solve for x
    x = 3,903,290,222.23/86,297.94
  6. Step 6: Final answer
    x = 45,230.40

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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.