Home / 51,658.84-77,420.18-20,477.08

Finding the Fourth Proportional to 51,658.84, 77,420.18 and 20,477.08

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Solution

The fourth proportional to 51,658.84, 77,420.18 and 20,477.08 is: 30,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,658.84 : 77,420.18 = 20,477.08 : x
  2. Step 2: Convert to fraction form
    51,658.84/77,420.18 = 20,477.08/x
  3. Step 3: Cross multiply
    51,658.84x = 77,420.18 × 20,477.08
  4. Step 4: Simplify right side
    51,658.84x = 1,585,339,219.47
  5. Step 5: Solve for x
    x = 1,585,339,219.47/51,658.84
  6. Step 6: Final answer
    x = 30,688.63

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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.