Home / 86,436.48-129,653.42-52,712.40

Finding the Fourth Proportional to 86,436.48, 129,653.42 and 52,712.40

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Solution

The fourth proportional to 86,436.48, 129,653.42 and 52,712.40 is: 79,067.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,436.48 : 129,653.42 = 52,712.40 : x
  2. Step 2: Convert to fraction form
    86,436.48/129,653.42 = 52,712.40/x
  3. Step 3: Cross multiply
    86,436.48x = 129,653.42 × 52,712.40
  4. Step 4: Simplify right side
    86,436.48x = 6,834,342,936.41
  5. Step 5: Solve for x
    x = 6,834,342,936.41/86,436.48
  6. Step 6: Final answer
    x = 79,067.81

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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.