Home / 86,416.34-129,605.04-31,012.34

Finding the Fourth Proportional to 86,416.34, 129,605.04 and 31,012.34

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Solution

The fourth proportional to 86,416.34, 129,605.04 and 31,012.34 is: 46,511.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,416.34 : 129,605.04 = 31,012.34 : x
  2. Step 2: Convert to fraction form
    86,416.34/129,605.04 = 31,012.34/x
  3. Step 3: Cross multiply
    86,416.34x = 129,605.04 × 31,012.34
  4. Step 4: Simplify right side
    86,416.34x = 4,019,355,566.19
  5. Step 5: Solve for x
    x = 4,019,355,566.19/86,416.34
  6. Step 6: Final answer
    x = 46,511.52

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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.