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Finding the Fourth Proportional to 79,011.48, 109,035.96 and 45,018.48

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Solution

The fourth proportional to 79,011.48, 109,035.96 and 45,018.48 is: 62,125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,011.48 : 109,035.96 = 45,018.48 : x
  2. Step 2: Convert to fraction form
    79,011.48/109,035.96 = 45,018.48/x
  3. Step 3: Cross multiply
    79,011.48x = 109,035.96 × 45,018.48
  4. Step 4: Simplify right side
    79,011.48x = 4,908,633,184.54
  5. Step 5: Solve for x
    x = 4,908,633,184.54/79,011.48
  6. Step 6: Final answer
    x = 62,125.57

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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.