Home / 86,934.40-130,369.20-30,752.80

Finding the Fourth Proportional to 86,934.40, 130,369.20 and 30,752.80

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Solution

The fourth proportional to 86,934.40, 130,369.20 and 30,752.80 is: 46,117.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,934.40 : 130,369.20 = 30,752.80 : x
  2. Step 2: Convert to fraction form
    86,934.40/130,369.20 = 30,752.80/x
  3. Step 3: Cross multiply
    86,934.40x = 130,369.20 × 30,752.80
  4. Step 4: Simplify right side
    86,934.40x = 4,009,217,933.76
  5. Step 5: Solve for x
    x = 4,009,217,933.76/86,934.40
  6. Step 6: Final answer
    x = 46,117.74

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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.