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Finding the Fourth Proportional to 77,354.68, 106,749.63 and 43,820.68

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Solution

The fourth proportional to 77,354.68, 106,749.63 and 43,820.68 is: 60,472.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,354.68 : 106,749.63 = 43,820.68 : x
  2. Step 2: Convert to fraction form
    77,354.68/106,749.63 = 43,820.68/x
  3. Step 3: Cross multiply
    77,354.68x = 106,749.63 × 43,820.68
  4. Step 4: Simplify right side
    77,354.68x = 4,677,841,376.35
  5. Step 5: Solve for x
    x = 4,677,841,376.35/77,354.68
  6. Step 6: Final answer
    x = 60,472.64

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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.