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Finding the Fourth Proportional to 85,461.54, 128,188.59 and 26,294.68

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Solution

The fourth proportional to 85,461.54, 128,188.59 and 26,294.68 is: 39,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,461.54 : 128,188.59 = 26,294.68 : x
  2. Step 2: Convert to fraction form
    85,461.54/128,188.59 = 26,294.68/x
  3. Step 3: Cross multiply
    85,461.54x = 128,188.59 × 26,294.68
  4. Step 4: Simplify right side
    85,461.54x = 3,370,677,953.70
  5. Step 5: Solve for x
    x = 3,370,677,953.70/85,461.54
  6. Step 6: Final answer
    x = 39,440.88

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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.