Home / 85,536,100.60-128,304,150.90-40,102,487.80

Finding the Fourth Proportional to 85,536,100.60, 128,304,150.90 and 40,102,487.80

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Solution

The fourth proportional to 85,536,100.60, 128,304,150.90 and 40,102,487.80 is: 60,153,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,100.60 : 128,304,150.90 = 40,102,487.80 : x
  2. Step 2: Convert to fraction form
    85,536,100.60/128,304,150.90 = 40,102,487.80/x
  3. Step 3: Cross multiply
    85,536,100.60x = 128,304,150.90 × 40,102,487.80
  4. Step 4: Simplify right side
    85,536,100.60x = 5,145,315,646,156,609
  5. Step 5: Solve for x
    x = 5,145,315,646,156,609/85,536,100.60
  6. Step 6: Final answer
    x = 60,153,731.70

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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.