Home / 81,418.40-112,307.64-53,823.05

Finding the Fourth Proportional to 81,418.40, 112,307.64 and 53,823.05

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Solution

The fourth proportional to 81,418.40, 112,307.64 and 53,823.05 is: 74,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,418.40 : 112,307.64 = 53,823.05 : x
  2. Step 2: Convert to fraction form
    81,418.40/112,307.64 = 53,823.05/x
  3. Step 3: Cross multiply
    81,418.40x = 112,307.64 × 53,823.05
  4. Step 4: Simplify right side
    81,418.40x = 6,044,739,161.56
  5. Step 5: Solve for x
    x = 6,044,739,161.56/81,418.40
  6. Step 6: Final answer
    x = 74,242.92

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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.