Home / 85,506.18-128,261.48-40,516.98

Finding the Fourth Proportional to 85,506.18, 128,261.48 and 40,516.98

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Solution

The fourth proportional to 85,506.18, 128,261.48 and 40,516.98 is: 60,776.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.18 : 128,261.48 = 40,516.98 : x
  2. Step 2: Convert to fraction form
    85,506.18/128,261.48 = 40,516.98/x
  3. Step 3: Cross multiply
    85,506.18x = 128,261.48 × 40,516.98
  4. Step 4: Simplify right side
    85,506.18x = 5,196,767,617.35
  5. Step 5: Solve for x
    x = 5,196,767,617.35/85,506.18
  6. Step 6: Final answer
    x = 60,776.51

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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.