Home / 86,733.20-130,013.40-39,904.40

Finding the Fourth Proportional to 86,733.20, 130,013.40 and 39,904.40

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Solution

The fourth proportional to 86,733.20, 130,013.40 and 39,904.40 is: 59,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,733.20 : 130,013.40 = 39,904.40 : x
  2. Step 2: Convert to fraction form
    86,733.20/130,013.40 = 39,904.40/x
  3. Step 3: Cross multiply
    86,733.20x = 130,013.40 × 39,904.40
  4. Step 4: Simplify right side
    86,733.20x = 5,188,106,718.96
  5. Step 5: Solve for x
    x = 5,188,106,718.96/86,733.20
  6. Step 6: Final answer
    x = 59,816.85

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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.