Home / 86,740.84-129,483.41-76,243.24

Finding the Fourth Proportional to 86,740.84, 129,483.41 and 76,243.24

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Solution

The fourth proportional to 86,740.84, 129,483.41 and 76,243.24 is: 113,812.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.84 : 129,483.41 = 76,243.24 : x
  2. Step 2: Convert to fraction form
    86,740.84/129,483.41 = 76,243.24/x
  3. Step 3: Cross multiply
    86,740.84x = 129,483.41 × 76,243.24
  4. Step 4: Simplify right side
    86,740.84x = 9,872,234,704.65
  5. Step 5: Solve for x
    x = 9,872,234,704.65/86,740.84
  6. Step 6: Final answer
    x = 113,812.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.