Home / 85,464,009.60-128,196,014.40-40,114,377.60

Finding the Fourth Proportional to 85,464,009.60, 128,196,014.40 and 40,114,377.60

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Solution

The fourth proportional to 85,464,009.60, 128,196,014.40 and 40,114,377.60 is: 60,171,566.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464,009.60 : 128,196,014.40 = 40,114,377.60 : x
  2. Step 2: Convert to fraction form
    85,464,009.60/128,196,014.40 = 40,114,377.60/x
  3. Step 3: Cross multiply
    85,464,009.60x = 128,196,014.40 × 40,114,377.60
  4. Step 4: Simplify right side
    85,464,009.60x = 5,142,503,328,456,638
  5. Step 5: Solve for x
    x = 5,142,503,328,456,638/85,464,009.60
  6. Step 6: Final answer
    x = 60,171,566.40

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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.