Home / 56,389.37-77,639.79-47,874.65

Finding the Fourth Proportional to 56,389.37, 77,639.79 and 47,874.65

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Solution

The fourth proportional to 56,389.37, 77,639.79 and 47,874.65 is: 65,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,389.37 : 77,639.79 = 47,874.65 : x
  2. Step 2: Convert to fraction form
    56,389.37/77,639.79 = 47,874.65/x
  3. Step 3: Cross multiply
    56,389.37x = 77,639.79 × 47,874.65
  4. Step 4: Simplify right side
    56,389.37x = 3,716,977,384.12
  5. Step 5: Solve for x
    x = 3,716,977,384.12/56,389.37
  6. Step 6: Final answer
    x = 65,916.28

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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.