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Finding the Fourth Proportional to 79,427.60, 109,612.64 and 45,893.60

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Solution

The fourth proportional to 79,427.60, 109,612.64 and 45,893.60 is: 63,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,427.60 : 109,612.64 = 45,893.60 : x
  2. Step 2: Convert to fraction form
    79,427.60/109,612.64 = 45,893.60/x
  3. Step 3: Cross multiply
    79,427.60x = 109,612.64 × 45,893.60
  4. Step 4: Simplify right side
    79,427.60x = 5,030,518,655.10
  5. Step 5: Solve for x
    x = 5,030,518,655.10/79,427.60
  6. Step 6: Final answer
    x = 63,334.64

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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.