Home / 86,936.10-130,404.15-40,280.10

Finding the Fourth Proportional to 86,936.10, 130,404.15 and 40,280.10

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Solution

The fourth proportional to 86,936.10, 130,404.15 and 40,280.10 is: 60,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,936.10 : 130,404.15 = 40,280.10 : x
  2. Step 2: Convert to fraction form
    86,936.10/130,404.15 = 40,280.10/x
  3. Step 3: Cross multiply
    86,936.10x = 130,404.15 × 40,280.10
  4. Step 4: Simplify right side
    86,936.10x = 5,252,692,202.42
  5. Step 5: Solve for x
    x = 5,252,692,202.42/86,936.10
  6. Step 6: Final answer
    x = 60,420.15

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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.