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Finding the Fourth Proportional to 86,762.88, 130,030.56 and 49,340.16

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Solution

The fourth proportional to 86,762.88, 130,030.56 and 49,340.16 is: 73,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,762.88 : 130,030.56 = 49,340.16 : x
  2. Step 2: Convert to fraction form
    86,762.88/130,030.56 = 49,340.16/x
  3. Step 3: Cross multiply
    86,762.88x = 130,030.56 × 49,340.16
  4. Step 4: Simplify right side
    86,762.88x = 6,415,728,635.29
  5. Step 5: Solve for x
    x = 6,415,728,635.29/86,762.88
  6. Step 6: Final answer
    x = 73,945.55

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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.