Home / 56,315.28-77,715.18-31,164.78

Finding the Fourth Proportional to 56,315.28, 77,715.18 and 31,164.78

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Solution

The fourth proportional to 56,315.28, 77,715.18 and 31,164.78 is: 43,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,315.28 : 77,715.18 = 31,164.78 : x
  2. Step 2: Convert to fraction form
    56,315.28/77,715.18 = 31,164.78/x
  3. Step 3: Cross multiply
    56,315.28x = 77,715.18 × 31,164.78
  4. Step 4: Simplify right side
    56,315.28x = 2,421,976,487.36
  5. Step 5: Solve for x
    x = 2,421,976,487.36/56,315.28
  6. Step 6: Final answer
    x = 43,007.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.