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Finding the Fourth Proportional to 86,915.57, 130,393.68 and 26,940.89

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Solution

The fourth proportional to 86,915.57, 130,393.68 and 26,940.89 is: 40,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.57 : 130,393.68 = 26,940.89 : x
  2. Step 2: Convert to fraction form
    86,915.57/130,393.68 = 26,940.89/x
  3. Step 3: Cross multiply
    86,915.57x = 130,393.68 × 26,940.89
  4. Step 4: Simplify right side
    86,915.57x = 3,512,922,014.53
  5. Step 5: Solve for x
    x = 3,512,922,014.53/86,915.57
  6. Step 6: Final answer
    x = 40,417.64

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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.