Home / 38,478.90-57,643.02-34,299.30

Finding the Fourth Proportional to 38,478.90, 57,643.02 and 34,299.30

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Solution

The fourth proportional to 38,478.90, 57,643.02 and 34,299.30 is: 51,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.90 : 57,643.02 = 34,299.30 : x
  2. Step 2: Convert to fraction form
    38,478.90/57,643.02 = 34,299.30/x
  3. Step 3: Cross multiply
    38,478.90x = 57,643.02 × 34,299.30
  4. Step 4: Simplify right side
    38,478.90x = 1,977,115,235.89
  5. Step 5: Solve for x
    x = 1,977,115,235.89/38,478.90
  6. Step 6: Final answer
    x = 51,381.80

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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.