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Finding the Fourth Proportional to 79,146.58, 109,232.70 and 45,147.28

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Solution

The fourth proportional to 79,146.58, 109,232.70 and 45,147.28 is: 62,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,146.58 : 109,232.70 = 45,147.28 : x
  2. Step 2: Convert to fraction form
    79,146.58/109,232.70 = 45,147.28/x
  3. Step 3: Cross multiply
    79,146.58x = 109,232.70 × 45,147.28
  4. Step 4: Simplify right side
    79,146.58x = 4,931,559,292.06
  5. Step 5: Solve for x
    x = 4,931,559,292.06/79,146.58
  6. Step 6: Final answer
    x = 62,309.19

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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.