Home / 81,019.74-111,812.89-45,210.35

Finding the Fourth Proportional to 81,019.74, 111,812.89 and 45,210.35

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Solution

The fourth proportional to 81,019.74, 111,812.89 and 45,210.35 is: 62,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,019.74 : 111,812.89 = 45,210.35 : x
  2. Step 2: Convert to fraction form
    81,019.74/111,812.89 = 45,210.35/x
  3. Step 3: Cross multiply
    81,019.74x = 111,812.89 × 45,210.35
  4. Step 4: Simplify right side
    81,019.74x = 5,055,099,332.35
  5. Step 5: Solve for x
    x = 5,055,099,332.35/81,019.74
  6. Step 6: Final answer
    x = 62,393.43

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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.