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Finding the Fourth Proportional to 86,328.25, 129,510.90 and 48,906.25

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Solution

The fourth proportional to 86,328.25, 129,510.90 and 48,906.25 is: 73,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,328.25 : 129,510.90 = 48,906.25 : x
  2. Step 2: Convert to fraction form
    86,328.25/129,510.90 = 48,906.25/x
  3. Step 3: Cross multiply
    86,328.25x = 129,510.90 × 48,906.25
  4. Step 4: Simplify right side
    86,328.25x = 6,333,892,129.35
  5. Step 5: Solve for x
    x = 6,333,892,129.35/86,328.25
  6. Step 6: Final answer
    x = 73,369.87

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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.