Home / 52,125.16-78,187.75-20,953.12

Finding the Fourth Proportional to 52,125.16, 78,187.75 and 20,953.12

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Solution

The fourth proportional to 52,125.16, 78,187.75 and 20,953.12 is: 31,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,125.16 : 78,187.75 = 20,953.12 : x
  2. Step 2: Convert to fraction form
    52,125.16/78,187.75 = 20,953.12/x
  3. Step 3: Cross multiply
    52,125.16x = 78,187.75 × 20,953.12
  4. Step 4: Simplify right side
    52,125.16x = 1,638,277,308.28
  5. Step 5: Solve for x
    x = 1,638,277,308.28/52,125.16
  6. Step 6: Final answer
    x = 31,429.68

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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.