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Finding the Fourth Proportional to 86,686.70, 130,030.05 and 49,232.30

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Solution

The fourth proportional to 86,686.70, 130,030.05 and 49,232.30 is: 73,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686.70 : 130,030.05 = 49,232.30 : x
  2. Step 2: Convert to fraction form
    86,686.70/130,030.05 = 49,232.30/x
  3. Step 3: Cross multiply
    86,686.70x = 130,030.05 × 49,232.30
  4. Step 4: Simplify right side
    86,686.70x = 6,401,678,430.62
  5. Step 5: Solve for x
    x = 6,401,678,430.62/86,686.70
  6. Step 6: Final answer
    x = 73,848.45

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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.