Home / 65,718.81-98,564.51-18,960.75

Finding the Fourth Proportional to 65,718.81, 98,564.51 and 18,960.75

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Solution

The fourth proportional to 65,718.81, 98,564.51 and 18,960.75 is: 28,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.81 : 98,564.51 = 18,960.75 : x
  2. Step 2: Convert to fraction form
    65,718.81/98,564.51 = 18,960.75/x
  3. Step 3: Cross multiply
    65,718.81x = 98,564.51 × 18,960.75
  4. Step 4: Simplify right side
    65,718.81x = 1,868,857,080.38
  5. Step 5: Solve for x
    x = 1,868,857,080.38/65,718.81
  6. Step 6: Final answer
    x = 28,437.17

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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.