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Finding the Fourth Proportional to 86,649.92, 119,512.92 and 54,788.06

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Solution

The fourth proportional to 86,649.92, 119,512.92 and 54,788.06 is: 75,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,649.92 : 119,512.92 = 54,788.06 : x
  2. Step 2: Convert to fraction form
    86,649.92/119,512.92 = 54,788.06/x
  3. Step 3: Cross multiply
    86,649.92x = 119,512.92 × 54,788.06
  4. Step 4: Simplify right side
    86,649.92x = 6,547,881,227.79
  5. Step 5: Solve for x
    x = 6,547,881,227.79/86,649.92
  6. Step 6: Final answer
    x = 75,567.08

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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.