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Finding the Fourth Proportional to 86,887.22, 119,842.52 and 79,740.24

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Solution

The fourth proportional to 86,887.22, 119,842.52 and 79,740.24 is: 109,984.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,887.22 : 119,842.52 = 79,740.24 : x
  2. Step 2: Convert to fraction form
    86,887.22/119,842.52 = 79,740.24/x
  3. Step 3: Cross multiply
    86,887.22x = 119,842.52 × 79,740.24
  4. Step 4: Simplify right side
    86,887.22x = 9,556,271,307.00
  5. Step 5: Solve for x
    x = 9,556,271,307.00/86,887.22
  6. Step 6: Final answer
    x = 109,984.77

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1.5x scale

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.