Home / 72,004.14-99,365.74-40,172.36

Finding the Fourth Proportional to 72,004.14, 99,365.74 and 40,172.36

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Solution

The fourth proportional to 72,004.14, 99,365.74 and 40,172.36 is: 55,437.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,004.14 : 99,365.74 = 40,172.36 : x
  2. Step 2: Convert to fraction form
    72,004.14/99,365.74 = 40,172.36/x
  3. Step 3: Cross multiply
    72,004.14x = 99,365.74 × 40,172.36
  4. Step 4: Simplify right side
    72,004.14x = 3,991,755,681.69
  5. Step 5: Solve for x
    x = 3,991,755,681.69/72,004.14
  6. Step 6: Final answer
    x = 55,437.86

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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.