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Finding the Fourth Proportional to 72,604.79, 100,151.16 and 45,700.59

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Solution

The fourth proportional to 72,604.79, 100,151.16 and 45,700.59 is: 63,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.79 : 100,151.16 = 45,700.59 : x
  2. Step 2: Convert to fraction form
    72,604.79/100,151.16 = 45,700.59/x
  3. Step 3: Cross multiply
    72,604.79x = 100,151.16 × 45,700.59
  4. Step 4: Simplify right side
    72,604.79x = 4,576,967,101.18
  5. Step 5: Solve for x
    x = 4,576,967,101.18/72,604.79
  6. Step 6: Final answer
    x = 63,039.47

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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.