Home / 90,810.84-125,315.81-49,971.15

Finding the Fourth Proportional to 90,810.84, 125,315.81 and 49,971.15

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Solution

The fourth proportional to 90,810.84, 125,315.81 and 49,971.15 is: 68,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,810.84 : 125,315.81 = 49,971.15 : x
  2. Step 2: Convert to fraction form
    90,810.84/125,315.81 = 49,971.15/x
  3. Step 3: Cross multiply
    90,810.84x = 125,315.81 × 49,971.15
  4. Step 4: Simplify right side
    90,810.84x = 6,262,174,889.03
  5. Step 5: Solve for x
    x = 6,262,174,889.03/90,810.84
  6. Step 6: Final answer
    x = 68,958.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.