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Finding the Fourth Proportional to 63,015.84, 86,936.40 and 40,348.80

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Solution

The fourth proportional to 63,015.84, 86,936.40 and 40,348.80 is: 55,665.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,015.84 : 86,936.40 = 40,348.80 : x
  2. Step 2: Convert to fraction form
    63,015.84/86,936.40 = 40,348.80/x
  3. Step 3: Cross multiply
    63,015.84x = 86,936.40 × 40,348.80
  4. Step 4: Simplify right side
    63,015.84x = 3,507,779,416.32
  5. Step 5: Solve for x
    x = 3,507,779,416.32/63,015.84
  6. Step 6: Final answer
    x = 55,665.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.