Home / 52,840.02-72,989.10-39,387.90

Finding the Fourth Proportional to 52,840.02, 72,989.10 and 39,387.90

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Solution

The fourth proportional to 52,840.02, 72,989.10 and 39,387.90 is: 54,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,840.02 : 72,989.10 = 39,387.90 : x
  2. Step 2: Convert to fraction form
    52,840.02/72,989.10 = 39,387.90/x
  3. Step 3: Cross multiply
    52,840.02x = 72,989.10 × 39,387.90
  4. Step 4: Simplify right side
    52,840.02x = 2,874,887,371.89
  5. Step 5: Solve for x
    x = 2,874,887,371.89/52,840.02
  6. Step 6: Final answer
    x = 54,407.39

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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.