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Finding the Fourth Proportional to 86,673.78, 130,051.88 and 60,060.72

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Solution

The fourth proportional to 86,673.78, 130,051.88 and 60,060.72 is: 90,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,673.78 : 130,051.88 = 60,060.72 : x
  2. Step 2: Convert to fraction form
    86,673.78/130,051.88 = 60,060.72/x
  3. Step 3: Cross multiply
    86,673.78x = 130,051.88 × 60,060.72
  4. Step 4: Simplify right side
    86,673.78x = 7,811,009,962.77
  5. Step 5: Solve for x
    x = 7,811,009,962.77/86,673.78
  6. Step 6: Final answer
    x = 90,119.64

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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.