Home / 71,749.31-99,014.04-39,918.20

Finding the Fourth Proportional to 71,749.31, 99,014.04 and 39,918.20

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Solution

The fourth proportional to 71,749.31, 99,014.04 and 39,918.20 is: 55,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.31 : 99,014.04 = 39,918.20 : x
  2. Step 2: Convert to fraction form
    71,749.31/99,014.04 = 39,918.20/x
  3. Step 3: Cross multiply
    71,749.31x = 99,014.04 × 39,918.20
  4. Step 4: Simplify right side
    71,749.31x = 3,952,461,756.46
  5. Step 5: Solve for x
    x = 3,952,461,756.46/71,749.31
  6. Step 6: Final answer
    x = 55,087.11

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1.5x scale

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.