Home / 86,004.30-129,006.45-39,348.30

Finding the Fourth Proportional to 86,004.30, 129,006.45 and 39,348.30

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Solution

The fourth proportional to 86,004.30, 129,006.45 and 39,348.30 is: 59,022.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004.30 : 129,006.45 = 39,348.30 : x
  2. Step 2: Convert to fraction form
    86,004.30/129,006.45 = 39,348.30/x
  3. Step 3: Cross multiply
    86,004.30x = 129,006.45 × 39,348.30
  4. Step 4: Simplify right side
    86,004.30x = 5,076,184,496.54
  5. Step 5: Solve for x
    x = 5,076,184,496.54/86,004.30
  6. Step 6: Final answer
    x = 59,022.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.