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Finding the Fourth Proportional to 79,259.60, 109,374.96 and 47,409.68

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Solution

The fourth proportional to 79,259.60, 109,374.96 and 47,409.68 is: 65,423.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,259.60 : 109,374.96 = 47,409.68 : x
  2. Step 2: Convert to fraction form
    79,259.60/109,374.96 = 47,409.68/x
  3. Step 3: Cross multiply
    79,259.60x = 109,374.96 × 47,409.68
  4. Step 4: Simplify right side
    79,259.60x = 5,185,431,853.61
  5. Step 5: Solve for x
    x = 5,185,431,853.61/79,259.60
  6. Step 6: Final answer
    x = 65,423.39

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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.