Home / 91,288.75-125,977.61-51,009.45

Finding the Fourth Proportional to 91,288.75, 125,977.61 and 51,009.45

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Solution

The fourth proportional to 91,288.75, 125,977.61 and 51,009.45 is: 70,392.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,288.75 : 125,977.61 = 51,009.45 : x
  2. Step 2: Convert to fraction form
    91,288.75/125,977.61 = 51,009.45/x
  3. Step 3: Cross multiply
    91,288.75x = 125,977.61 × 51,009.45
  4. Step 4: Simplify right side
    91,288.75x = 6,426,048,598.41
  5. Step 5: Solve for x
    x = 6,426,048,598.41/91,288.75
  6. Step 6: Final answer
    x = 70,392.56

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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.