Home / 71,760.11-99,015.53-39,929.00

Finding the Fourth Proportional to 71,760.11, 99,015.53 and 39,929.00

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Solution

The fourth proportional to 71,760.11, 99,015.53 and 39,929.00 is: 55,094.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,760.11 : 99,015.53 = 39,929.00 : x
  2. Step 2: Convert to fraction form
    71,760.11/99,015.53 = 39,929.00/x
  3. Step 3: Cross multiply
    71,760.11x = 99,015.53 × 39,929.00
  4. Step 4: Simplify right side
    71,760.11x = 3,953,590,402.65
  5. Step 5: Solve for x
    x = 3,953,590,402.65/71,760.11
  6. Step 6: Final answer
    x = 55,094.55

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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.