Home / 66,005.60-99,008.40-54,341.60

Finding the Fourth Proportional to 66,005.60, 99,008.40 and 54,341.60

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Solution

The fourth proportional to 66,005.60, 99,008.40 and 54,341.60 is: 81,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.60 : 99,008.40 = 54,341.60 : x
  2. Step 2: Convert to fraction form
    66,005.60/99,008.40 = 54,341.60/x
  3. Step 3: Cross multiply
    66,005.60x = 99,008.40 × 54,341.60
  4. Step 4: Simplify right side
    66,005.60x = 5,380,274,869.44
  5. Step 5: Solve for x
    x = 5,380,274,869.44/66,005.60
  6. Step 6: Final answer
    x = 81,512.40

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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.