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Finding the Fourth Proportional to 79,011.73, 109,036.29 and 45,018.73

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Solution

The fourth proportional to 79,011.73, 109,036.29 and 45,018.73 is: 62,125.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,011.73 : 109,036.29 = 45,018.73 : x
  2. Step 2: Convert to fraction form
    79,011.73/109,036.29 = 45,018.73/x
  3. Step 3: Cross multiply
    79,011.73x = 109,036.29 × 45,018.73
  4. Step 4: Simplify right side
    79,011.73x = 4,908,675,299.71
  5. Step 5: Solve for x
    x = 4,908,675,299.71/79,011.73
  6. Step 6: Final answer
    x = 62,125.91

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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.