Home / 86,647.24-129,675.16-72,623.10

Finding the Fourth Proportional to 86,647.24, 129,675.16 and 72,623.10

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Solution

The fourth proportional to 86,647.24, 129,675.16 and 72,623.10 is: 108,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,647.24 : 129,675.16 = 72,623.10 : x
  2. Step 2: Convert to fraction form
    86,647.24/129,675.16 = 72,623.10/x
  3. Step 3: Cross multiply
    86,647.24x = 129,675.16 × 72,623.10
  4. Step 4: Simplify right side
    86,647.24x = 9,417,412,112.20
  5. Step 5: Solve for x
    x = 9,417,412,112.20/86,647.24
  6. Step 6: Final answer
    x = 108,686.81

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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.