Home / 70,428.24-105,642.60-17,837.70

Finding the Fourth Proportional to 70,428.24, 105,642.60 and 17,837.70

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Solution

The fourth proportional to 70,428.24, 105,642.60 and 17,837.70 is: 26,756.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428.24 : 105,642.60 = 17,837.70 : x
  2. Step 2: Convert to fraction form
    70,428.24/105,642.60 = 17,837.70/x
  3. Step 3: Cross multiply
    70,428.24x = 105,642.60 × 17,837.70
  4. Step 4: Simplify right side
    70,428.24x = 1,884,421,006.02
  5. Step 5: Solve for x
    x = 1,884,421,006.02/70,428.24
  6. Step 6: Final answer
    x = 26,756.61

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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.