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Finding the Fourth Proportional to 86,769.39, 130,005.54 and 47,354.19

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Solution

The fourth proportional to 86,769.39, 130,005.54 and 47,354.19 is: 70,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,769.39 : 130,005.54 = 47,354.19 : x
  2. Step 2: Convert to fraction form
    86,769.39/130,005.54 = 47,354.19/x
  3. Step 3: Cross multiply
    86,769.39x = 130,005.54 × 47,354.19
  4. Step 4: Simplify right side
    86,769.39x = 6,156,307,042.21
  5. Step 5: Solve for x
    x = 6,156,307,042.21/86,769.39
  6. Step 6: Final answer
    x = 70,950.22

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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.