Home / 75,869.30-113,872.80-38,455.40

Finding the Fourth Proportional to 75,869.30, 113,872.80 and 38,455.40

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Solution

The fourth proportional to 75,869.30, 113,872.80 and 38,455.40 is: 57,718.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,869.30 : 113,872.80 = 38,455.40 : x
  2. Step 2: Convert to fraction form
    75,869.30/113,872.80 = 38,455.40/x
  3. Step 3: Cross multiply
    75,869.30x = 113,872.80 × 38,455.40
  4. Step 4: Simplify right side
    75,869.30x = 4,379,024,073.12
  5. Step 5: Solve for x
    x = 4,379,024,073.12/75,869.30
  6. Step 6: Final answer
    x = 57,718.00

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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.