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Finding the Fourth Proportional to 85,308.20, 127,962.30 and 40,927.40

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Solution

The fourth proportional to 85,308.20, 127,962.30 and 40,927.40 is: 61,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.20 : 127,962.30 = 40,927.40 : x
  2. Step 2: Convert to fraction form
    85,308.20/127,962.30 = 40,927.40/x
  3. Step 3: Cross multiply
    85,308.20x = 127,962.30 × 40,927.40
  4. Step 4: Simplify right side
    85,308.20x = 5,237,164,237.02
  5. Step 5: Solve for x
    x = 5,237,164,237.02/85,308.20
  6. Step 6: Final answer
    x = 61,391.10

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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.