Home / 86,516.85-129,712.95-53,167.98

Finding the Fourth Proportional to 86,516.85, 129,712.95 and 53,167.98

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Solution

The fourth proportional to 86,516.85, 129,712.95 and 53,167.98 is: 79,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516.85 : 129,712.95 = 53,167.98 : x
  2. Step 2: Convert to fraction form
    86,516.85/129,712.95 = 53,167.98/x
  3. Step 3: Cross multiply
    86,516.85x = 129,712.95 × 53,167.98
  4. Step 4: Simplify right side
    86,516.85x = 6,896,575,531.34
  5. Step 5: Solve for x
    x = 6,896,575,531.34/86,516.85
  6. Step 6: Final answer
    x = 79,713.67

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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.