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Finding the Fourth Proportional to 79,010.13, 109,041.39 and 43,205.40

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Solution

The fourth proportional to 79,010.13, 109,041.39 and 43,205.40 is: 59,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,010.13 : 109,041.39 = 43,205.40 : x
  2. Step 2: Convert to fraction form
    79,010.13/109,041.39 = 43,205.40/x
  3. Step 3: Cross multiply
    79,010.13x = 109,041.39 × 43,205.40
  4. Step 4: Simplify right side
    79,010.13x = 4,711,176,871.51
  5. Step 5: Solve for x
    x = 4,711,176,871.51/79,010.13
  6. Step 6: Final answer
    x = 59,627.50

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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.