Home / 72,989.02-100,725.29-46,143.60

Finding the Fourth Proportional to 72,989.02, 100,725.29 and 46,143.60

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Solution

The fourth proportional to 72,989.02, 100,725.29 and 46,143.60 is: 63,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,989.02 : 100,725.29 = 46,143.60 : x
  2. Step 2: Convert to fraction form
    72,989.02/100,725.29 = 46,143.60/x
  3. Step 3: Cross multiply
    72,989.02x = 100,725.29 × 46,143.60
  4. Step 4: Simplify right side
    72,989.02x = 4,647,827,491.64
  5. Step 5: Solve for x
    x = 4,647,827,491.64/72,989.02
  6. Step 6: Final answer
    x = 63,678.45

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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.