Home / 56,913.60-85,370.40-19,972.80

Finding the Fourth Proportional to 56,913.60, 85,370.40 and 19,972.80

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Solution

The fourth proportional to 56,913.60, 85,370.40 and 19,972.80 is: 29,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.60 : 85,370.40 = 19,972.80 : x
  2. Step 2: Convert to fraction form
    56,913.60/85,370.40 = 19,972.80/x
  3. Step 3: Cross multiply
    56,913.60x = 85,370.40 × 19,972.80
  4. Step 4: Simplify right side
    56,913.60x = 1,705,085,925.12
  5. Step 5: Solve for x
    x = 1,705,085,925.12/56,913.60
  6. Step 6: Final answer
    x = 29,959.20

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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.