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Finding the Fourth Proportional to 79,660.80, 110,030.40 and 58,406.40

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Solution

The fourth proportional to 79,660.80, 110,030.40 and 58,406.40 is: 80,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.80 : 110,030.40 = 58,406.40 : x
  2. Step 2: Convert to fraction form
    79,660.80/110,030.40 = 58,406.40/x
  3. Step 3: Cross multiply
    79,660.80x = 110,030.40 × 58,406.40
  4. Step 4: Simplify right side
    79,660.80x = 6,426,479,554.56
  5. Step 5: Solve for x
    x = 6,426,479,554.56/79,660.80
  6. Step 6: Final answer
    x = 80,673.05

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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.