Home / 86,208.72-129,312.80-23,879.04

Finding the Fourth Proportional to 86,208.72, 129,312.80 and 23,879.04

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Solution

The fourth proportional to 86,208.72, 129,312.80 and 23,879.04 is: 35,818.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.72 : 129,312.80 = 23,879.04 : x
  2. Step 2: Convert to fraction form
    86,208.72/129,312.80 = 23,879.04/x
  3. Step 3: Cross multiply
    86,208.72x = 129,312.80 × 23,879.04
  4. Step 4: Simplify right side
    86,208.72x = 3,087,865,523.71
  5. Step 5: Solve for x
    x = 3,087,865,523.71/86,208.72
  6. Step 6: Final answer
    x = 35,818.48

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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.