Home / 42,659.60-63,989.40-28,662.80

Finding the Fourth Proportional to 42,659.60, 63,989.40 and 28,662.80

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Solution

The fourth proportional to 42,659.60, 63,989.40 and 28,662.80 is: 42,994.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,659.60 : 63,989.40 = 28,662.80 : x
  2. Step 2: Convert to fraction form
    42,659.60/63,989.40 = 28,662.80/x
  3. Step 3: Cross multiply
    42,659.60x = 63,989.40 × 28,662.80
  4. Step 4: Simplify right side
    42,659.60x = 1,834,115,374.32
  5. Step 5: Solve for x
    x = 1,834,115,374.32/42,659.60
  6. Step 6: Final answer
    x = 42,994.20

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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.