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Finding the Fourth Proportional to 79,429.60, 109,615.40 and 45,895.60

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Solution

The fourth proportional to 79,429.60, 109,615.40 and 45,895.60 is: 63,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,429.60 : 109,615.40 = 45,895.60 : x
  2. Step 2: Convert to fraction form
    79,429.60/109,615.40 = 45,895.60/x
  3. Step 3: Cross multiply
    79,429.60x = 109,615.40 × 45,895.60
  4. Step 4: Simplify right side
    79,429.60x = 5,030,864,552.24
  5. Step 5: Solve for x
    x = 5,030,864,552.24/79,429.60
  6. Step 6: Final answer
    x = 63,337.40

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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.