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Finding the Fourth Proportional to 52,085.80, 78,128.70 and 17,026.60

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Solution

The fourth proportional to 52,085.80, 78,128.70 and 17,026.60 is: 25,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,085.80 : 78,128.70 = 17,026.60 : x
  2. Step 2: Convert to fraction form
    52,085.80/78,128.70 = 17,026.60/x
  3. Step 3: Cross multiply
    52,085.80x = 78,128.70 × 17,026.60
  4. Step 4: Simplify right side
    52,085.80x = 1,330,266,123.42
  5. Step 5: Solve for x
    x = 1,330,266,123.42/52,085.80
  6. Step 6: Final answer
    x = 25,539.90

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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.