Home / 51,913.86-77,877.30-20,319.84

Finding the Fourth Proportional to 51,913.86, 77,877.30 and 20,319.84

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Solution

The fourth proportional to 51,913.86, 77,877.30 and 20,319.84 is: 30,482.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,913.86 : 77,877.30 = 20,319.84 : x
  2. Step 2: Convert to fraction form
    51,913.86/77,877.30 = 20,319.84/x
  3. Step 3: Cross multiply
    51,913.86x = 77,877.30 × 20,319.84
  4. Step 4: Simplify right side
    51,913.86x = 1,582,454,275.63
  5. Step 5: Solve for x
    x = 1,582,454,275.63/51,913.86
  6. Step 6: Final answer
    x = 30,482.31

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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.