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Finding the Fourth Proportional to 84,877.60, 127,316.40 and 21,697.60

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Solution

The fourth proportional to 84,877.60, 127,316.40 and 21,697.60 is: 32,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,877.60 : 127,316.40 = 21,697.60 : x
  2. Step 2: Convert to fraction form
    84,877.60/127,316.40 = 21,697.60/x
  3. Step 3: Cross multiply
    84,877.60x = 127,316.40 × 21,697.60
  4. Step 4: Simplify right side
    84,877.60x = 2,762,460,320.64
  5. Step 5: Solve for x
    x = 2,762,460,320.64/84,877.60
  6. Step 6: Final answer
    x = 32,546.40

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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.