Home / 70,264.45-105,402.14-20,345.26

Finding the Fourth Proportional to 70,264.45, 105,402.14 and 20,345.26

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Solution

The fourth proportional to 70,264.45, 105,402.14 and 20,345.26 is: 30,519.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,264.45 : 105,402.14 = 20,345.26 : x
  2. Step 2: Convert to fraction form
    70,264.45/105,402.14 = 20,345.26/x
  3. Step 3: Cross multiply
    70,264.45x = 105,402.14 × 20,345.26
  4. Step 4: Simplify right side
    70,264.45x = 2,144,433,942.86
  5. Step 5: Solve for x
    x = 2,144,433,942.86/70,264.45
  6. Step 6: Final answer
    x = 30,519.47

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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.