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Finding the Fourth Proportional to 78,160.88, 107,861.64 and 42,350.87

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Solution

The fourth proportional to 78,160.88, 107,861.64 and 42,350.87 is: 58,444.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,160.88 : 107,861.64 = 42,350.87 : x
  2. Step 2: Convert to fraction form
    78,160.88/107,861.64 = 42,350.87/x
  3. Step 3: Cross multiply
    78,160.88x = 107,861.64 × 42,350.87
  4. Step 4: Simplify right side
    78,160.88x = 4,568,034,293.63
  5. Step 5: Solve for x
    x = 4,568,034,293.63/78,160.88
  6. Step 6: Final answer
    x = 58,444.00

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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.