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Finding the Fourth Proportional to 64,277.80, 88,703.36 and 39,127.30

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Solution

The fourth proportional to 64,277.80, 88,703.36 and 39,127.30 is: 53,995.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,277.80 : 88,703.36 = 39,127.30 : x
  2. Step 2: Convert to fraction form
    64,277.80/88,703.36 = 39,127.30/x
  3. Step 3: Cross multiply
    64,277.80x = 88,703.36 × 39,127.30
  4. Step 4: Simplify right side
    64,277.80x = 3,470,722,534.21
  5. Step 5: Solve for x
    x = 3,470,722,534.21/64,277.80
  6. Step 6: Final answer
    x = 53,995.67

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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.