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Finding the Fourth Proportional to 86,888.60, 119,934.78 and 51,076.88

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Solution

The fourth proportional to 86,888.60, 119,934.78 and 51,076.88 is: 70,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,888.60 : 119,934.78 = 51,076.88 : x
  2. Step 2: Convert to fraction form
    86,888.60/119,934.78 = 51,076.88/x
  3. Step 3: Cross multiply
    86,888.60x = 119,934.78 × 51,076.88
  4. Step 4: Simplify right side
    86,888.60x = 6,125,894,365.89
  5. Step 5: Solve for x
    x = 6,125,894,365.89/86,888.60
  6. Step 6: Final answer
    x = 70,502.85

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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.