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Finding the Fourth Proportional to 55,878.63, 83,870.60 and 20,374.26

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Solution

The fourth proportional to 55,878.63, 83,870.60 and 20,374.26 is: 30,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,878.63 : 83,870.60 = 20,374.26 : x
  2. Step 2: Convert to fraction form
    55,878.63/83,870.60 = 20,374.26/x
  3. Step 3: Cross multiply
    55,878.63x = 83,870.60 × 20,374.26
  4. Step 4: Simplify right side
    55,878.63x = 1,708,801,308.88
  5. Step 5: Solve for x
    x = 1,708,801,308.88/55,878.63
  6. Step 6: Final answer
    x = 30,580.59

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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.