Home / 63,771.17-87,980.45-39,888.77

Finding the Fourth Proportional to 63,771.17, 87,980.45 and 39,888.77

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Solution

The fourth proportional to 63,771.17, 87,980.45 and 39,888.77 is: 55,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,771.17 : 87,980.45 = 39,888.77 : x
  2. Step 2: Convert to fraction form
    63,771.17/87,980.45 = 39,888.77/x
  3. Step 3: Cross multiply
    63,771.17x = 87,980.45 × 39,888.77
  4. Step 4: Simplify right side
    63,771.17x = 3,509,431,735.10
  5. Step 5: Solve for x
    x = 3,509,431,735.10/63,771.17
  6. Step 6: Final answer
    x = 55,031.63

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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.