Home / 87,984.48-121,386.76-57,786.16

Finding the Fourth Proportional to 87,984.48, 121,386.76 and 57,786.16

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Solution

The fourth proportional to 87,984.48, 121,386.76 and 57,786.16 is: 79,724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,984.48 : 121,386.76 = 57,786.16 : x
  2. Step 2: Convert to fraction form
    87,984.48/121,386.76 = 57,786.16/x
  3. Step 3: Cross multiply
    87,984.48x = 121,386.76 × 57,786.16
  4. Step 4: Simplify right side
    87,984.48x = 7,014,474,735.24
  5. Step 5: Solve for x
    x = 7,014,474,735.24/87,984.48
  6. Step 6: Final answer
    x = 79,724.00

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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.