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Finding the Fourth Proportional to 86,088.96, 118,869.12 and 69,396.48

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Solution

The fourth proportional to 86,088.96, 118,869.12 and 69,396.48 is: 95,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,088.96 : 118,869.12 = 69,396.48 : x
  2. Step 2: Convert to fraction form
    86,088.96/118,869.12 = 69,396.48/x
  3. Step 3: Cross multiply
    86,088.96x = 118,869.12 × 69,396.48
  4. Step 4: Simplify right side
    86,088.96x = 8,249,098,508.70
  5. Step 5: Solve for x
    x = 8,249,098,508.70/86,088.96
  6. Step 6: Final answer
    x = 95,820.63

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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.