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Finding the Fourth Proportional to 79,351.79, 109,505.16 and 43,542.40

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Solution

The fourth proportional to 79,351.79, 109,505.16 and 43,542.40 is: 60,088.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,351.79 : 109,505.16 = 43,542.40 : x
  2. Step 2: Convert to fraction form
    79,351.79/109,505.16 = 43,542.40/x
  3. Step 3: Cross multiply
    79,351.79x = 109,505.16 × 43,542.40
  4. Step 4: Simplify right side
    79,351.79x = 4,768,116,931.26
  5. Step 5: Solve for x
    x = 4,768,116,931.26/79,351.79
  6. Step 6: Final answer
    x = 60,088.34

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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.