Home / 86,541.40-129,855.30-49,130.20

Finding the Fourth Proportional to 86,541.40, 129,855.30 and 49,130.20

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Solution

The fourth proportional to 86,541.40, 129,855.30 and 49,130.20 is: 73,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,541.40 : 129,855.30 = 49,130.20 : x
  2. Step 2: Convert to fraction form
    86,541.40/129,855.30 = 49,130.20/x
  3. Step 3: Cross multiply
    86,541.40x = 129,855.30 × 49,130.20
  4. Step 4: Simplify right side
    86,541.40x = 6,379,816,860.06
  5. Step 5: Solve for x
    x = 6,379,816,860.06/86,541.40
  6. Step 6: Final answer
    x = 73,719.82

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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.