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Finding the Fourth Proportional to 91,293.51, 125,982.69 and 51,007.56

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Solution

The fourth proportional to 91,293.51, 125,982.69 and 51,007.56 is: 70,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,293.51 : 125,982.69 = 51,007.56 : x
  2. Step 2: Convert to fraction form
    91,293.51/125,982.69 = 51,007.56/x
  3. Step 3: Cross multiply
    91,293.51x = 125,982.69 × 51,007.56
  4. Step 4: Simplify right side
    91,293.51x = 6,426,069,619.14
  5. Step 5: Solve for x
    x = 6,426,069,619.14/91,293.51
  6. Step 6: Final answer
    x = 70,389.12

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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.