Home / 72,122.13-99,528.14-39,859.02

Finding the Fourth Proportional to 72,122.13, 99,528.14 and 39,859.02

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Solution

The fourth proportional to 72,122.13, 99,528.14 and 39,859.02 is: 55,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,122.13 : 99,528.14 = 39,859.02 : x
  2. Step 2: Convert to fraction form
    72,122.13/99,528.14 = 39,859.02/x
  3. Step 3: Cross multiply
    72,122.13x = 99,528.14 × 39,859.02
  4. Step 4: Simplify right side
    72,122.13x = 3,967,094,222.47
  5. Step 5: Solve for x
    x = 3,967,094,222.47/72,122.13
  6. Step 6: Final answer
    x = 55,005.23

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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.