Home / 72,036.51-99,411.97-39,771.03

Finding the Fourth Proportional to 72,036.51, 99,411.97 and 39,771.03

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Solution

The fourth proportional to 72,036.51, 99,411.97 and 39,771.03 is: 54,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036.51 : 99,411.97 = 39,771.03 : x
  2. Step 2: Convert to fraction form
    72,036.51/99,411.97 = 39,771.03/x
  3. Step 3: Cross multiply
    72,036.51x = 99,411.97 × 39,771.03
  4. Step 4: Simplify right side
    72,036.51x = 3,953,715,944.17
  5. Step 5: Solve for x
    x = 3,953,715,944.17/72,036.51
  6. Step 6: Final answer
    x = 54,884.89

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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.