Home / 86,985.81-130,257.18-57,313.71

Finding the Fourth Proportional to 86,985.81, 130,257.18 and 57,313.71

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Solution

The fourth proportional to 86,985.81, 130,257.18 and 57,313.71 is: 85,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.81 : 130,257.18 = 57,313.71 : x
  2. Step 2: Convert to fraction form
    86,985.81/130,257.18 = 57,313.71/x
  3. Step 3: Cross multiply
    86,985.81x = 130,257.18 × 57,313.71
  4. Step 4: Simplify right side
    86,985.81x = 7,465,522,239.94
  5. Step 5: Solve for x
    x = 7,465,522,239.94/86,985.81
  6. Step 6: Final answer
    x = 85,824.60

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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.