Home / 86,821.50-119,814.40-47,077.50

Finding the Fourth Proportional to 86,821.50, 119,814.40 and 47,077.50

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Solution

The fourth proportional to 86,821.50, 119,814.40 and 47,077.50 is: 64,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,821.50 : 119,814.40 = 47,077.50 : x
  2. Step 2: Convert to fraction form
    86,821.50/119,814.40 = 47,077.50/x
  3. Step 3: Cross multiply
    86,821.50x = 119,814.40 × 47,077.50
  4. Step 4: Simplify right side
    86,821.50x = 5,640,562,416
  5. Step 5: Solve for x
    x = 5,640,562,416/86,821.50
  6. Step 6: Final answer
    x = 64,967.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.