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Finding the Fourth Proportional to 85,172.40, 127,777.80 and 26,010.80

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Solution

The fourth proportional to 85,172.40, 127,777.80 and 26,010.80 is: 39,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,172.40 : 127,777.80 = 26,010.80 : x
  2. Step 2: Convert to fraction form
    85,172.40/127,777.80 = 26,010.80/x
  3. Step 3: Cross multiply
    85,172.40x = 127,777.80 × 26,010.80
  4. Step 4: Simplify right side
    85,172.40x = 3,323,602,800.24
  5. Step 5: Solve for x
    x = 3,323,602,800.24/85,172.40
  6. Step 6: Final answer
    x = 39,022.06

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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.