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Finding the Fourth Proportional to 79,701.86, 109,955.55 and 47,430.01

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Solution

The fourth proportional to 79,701.86, 109,955.55 and 47,430.01 is: 65,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,701.86 : 109,955.55 = 47,430.01 : x
  2. Step 2: Convert to fraction form
    79,701.86/109,955.55 = 47,430.01/x
  3. Step 3: Cross multiply
    79,701.86x = 109,955.55 × 47,430.01
  4. Step 4: Simplify right side
    79,701.86x = 5,215,192,836.06
  5. Step 5: Solve for x
    x = 5,215,192,836.06/79,701.86
  6. Step 6: Final answer
    x = 65,433.77

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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.