Home / 81,055.46-121,625.98-57,515.10

Finding the Fourth Proportional to 81,055.46, 121,625.98 and 57,515.10

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Solution

The fourth proportional to 81,055.46, 121,625.98 and 57,515.10 is: 86,303.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.46 : 121,625.98 = 57,515.10 : x
  2. Step 2: Convert to fraction form
    81,055.46/121,625.98 = 57,515.10/x
  3. Step 3: Cross multiply
    81,055.46x = 121,625.98 × 57,515.10
  4. Step 4: Simplify right side
    81,055.46x = 6,995,330,402.30
  5. Step 5: Solve for x
    x = 6,995,330,402.30/81,055.46
  6. Step 6: Final answer
    x = 86,303.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.