Home / 86,779.85-130,021.17-47,364.62

Finding the Fourth Proportional to 86,779.85, 130,021.17 and 47,364.62

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Solution

The fourth proportional to 86,779.85, 130,021.17 and 47,364.62 is: 70,965.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,779.85 : 130,021.17 = 47,364.62 : x
  2. Step 2: Convert to fraction form
    86,779.85/130,021.17 = 47,364.62/x
  3. Step 3: Cross multiply
    86,779.85x = 130,021.17 × 47,364.62
  4. Step 4: Simplify right side
    86,779.85x = 6,158,402,658.90
  5. Step 5: Solve for x
    x = 6,158,402,658.90/86,779.85
  6. Step 6: Final answer
    x = 70,965.82

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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.