Home / 51,315.40-77,030.70-39,680.20

Finding the Fourth Proportional to 51,315.40, 77,030.70 and 39,680.20

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Solution

The fourth proportional to 51,315.40, 77,030.70 and 39,680.20 is: 59,564.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,315.40 : 77,030.70 = 39,680.20 : x
  2. Step 2: Convert to fraction form
    51,315.40/77,030.70 = 39,680.20/x
  3. Step 3: Cross multiply
    51,315.40x = 77,030.70 × 39,680.20
  4. Step 4: Simplify right side
    51,315.40x = 3,056,593,582.14
  5. Step 5: Solve for x
    x = 3,056,593,582.14/51,315.40
  6. Step 6: Final answer
    x = 59,564.84

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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.