Home / 102,941.37-142,047.09-57,621.87

Finding the Fourth Proportional to 102,941.37, 142,047.09 and 57,621.87

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Solution

The fourth proportional to 102,941.37, 142,047.09 and 57,621.87 is: 79,511.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,941.37 : 142,047.09 = 57,621.87 : x
  2. Step 2: Convert to fraction form
    102,941.37/142,047.09 = 57,621.87/x
  3. Step 3: Cross multiply
    102,941.37x = 142,047.09 × 57,621.87
  4. Step 4: Simplify right side
    102,941.37x = 8,185,018,953.86
  5. Step 5: Solve for x
    x = 8,185,018,953.86/102,941.37
  6. Step 6: Final answer
    x = 79,511.46

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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.