Home / 86,421.66-119,271.51-54,589.02

Finding the Fourth Proportional to 86,421.66, 119,271.51 and 54,589.02

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Solution

The fourth proportional to 86,421.66, 119,271.51 and 54,589.02 is: 75,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,421.66 : 119,271.51 = 54,589.02 : x
  2. Step 2: Convert to fraction form
    86,421.66/119,271.51 = 54,589.02/x
  3. Step 3: Cross multiply
    86,421.66x = 119,271.51 × 54,589.02
  4. Step 4: Simplify right side
    86,421.66x = 6,510,914,844.82
  5. Step 5: Solve for x
    x = 6,510,914,844.82/86,421.66
  6. Step 6: Final answer
    x = 75,338.92

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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.