Home / 71,678.01-98,916-39,846.91

Finding the Fourth Proportional to 71,678.01, 98,916 and 39,846.91

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Solution

The fourth proportional to 71,678.01, 98,916 and 39,846.91 is: 54,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,678.01 : 98,916 = 39,846.91 : x
  2. Step 2: Convert to fraction form
    71,678.01/98,916 = 39,846.91/x
  3. Step 3: Cross multiply
    71,678.01x = 98,916 × 39,846.91
  4. Step 4: Simplify right side
    71,678.01x = 3,941,496,949.56
  5. Step 5: Solve for x
    x = 3,941,496,949.56/71,678.01
  6. Step 6: Final answer
    x = 54,988.93

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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.