Home / 78,542.75-108,389.45-42,733.01

Finding the Fourth Proportional to 78,542.75, 108,389.45 and 42,733.01

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Solution

The fourth proportional to 78,542.75, 108,389.45 and 42,733.01 is: 58,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,542.75 : 108,389.45 = 42,733.01 : x
  2. Step 2: Convert to fraction form
    78,542.75/108,389.45 = 42,733.01/x
  3. Step 3: Cross multiply
    78,542.75x = 108,389.45 × 42,733.01
  4. Step 4: Simplify right side
    78,542.75x = 4,631,807,828.55
  5. Step 5: Solve for x
    x = 4,631,807,828.55/78,542.75
  6. Step 6: Final answer
    x = 58,971.81

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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.