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Finding the Fourth Proportional to 77,376.48, 106,779.36 and 43,842.48

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Solution

The fourth proportional to 77,376.48, 106,779.36 and 43,842.48 is: 60,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,376.48 : 106,779.36 = 43,842.48 : x
  2. Step 2: Convert to fraction form
    77,376.48/106,779.36 = 43,842.48/x
  3. Step 3: Cross multiply
    77,376.48x = 106,779.36 × 43,842.48
  4. Step 4: Simplify right side
    77,376.48x = 4,681,471,955.21
  5. Step 5: Solve for x
    x = 4,681,471,955.21/77,376.48
  6. Step 6: Final answer
    x = 60,502.52

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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.