Home / 53,307.72-79,837.20-42,139.44

Finding the Fourth Proportional to 53,307.72, 79,837.20 and 42,139.44

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Solution

The fourth proportional to 53,307.72, 79,837.20 and 42,139.44 is: 63,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,307.72 : 79,837.20 = 42,139.44 : x
  2. Step 2: Convert to fraction form
    53,307.72/79,837.20 = 42,139.44/x
  3. Step 3: Cross multiply
    53,307.72x = 79,837.20 × 42,139.44
  4. Step 4: Simplify right side
    53,307.72x = 3,364,294,899.17
  5. Step 5: Solve for x
    x = 3,364,294,899.17/53,307.72
  6. Step 6: Final answer
    x = 63,110.84

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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.