Home / 86,428.74-129,556.98-36,521.40

Finding the Fourth Proportional to 86,428.74, 129,556.98 and 36,521.40

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Solution

The fourth proportional to 86,428.74, 129,556.98 and 36,521.40 is: 54,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,428.74 : 129,556.98 = 36,521.40 : x
  2. Step 2: Convert to fraction form
    86,428.74/129,556.98 = 36,521.40/x
  3. Step 3: Cross multiply
    86,428.74x = 129,556.98 × 36,521.40
  4. Step 4: Simplify right side
    86,428.74x = 4,731,602,289.37
  5. Step 5: Solve for x
    x = 4,731,602,289.37/86,428.74
  6. Step 6: Final answer
    x = 54,745.70

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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.