Home / 78,581.11-108,441.91-42,771.36

Finding the Fourth Proportional to 78,581.11, 108,441.91 and 42,771.36

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Solution

The fourth proportional to 78,581.11, 108,441.91 and 42,771.36 is: 59,024.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,581.11 : 108,441.91 = 42,771.36 : x
  2. Step 2: Convert to fraction form
    78,581.11/108,441.91 = 42,771.36/x
  3. Step 3: Cross multiply
    78,581.11x = 108,441.91 × 42,771.36
  4. Step 4: Simplify right side
    78,581.11x = 4,638,208,000.32
  5. Step 5: Solve for x
    x = 4,638,208,000.32/78,581.11
  6. Step 6: Final answer
    x = 59,024.47

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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.