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Finding the Fourth Proportional to 79,220.19, 109,323.86 and 45,686.19

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Solution

The fourth proportional to 79,220.19, 109,323.86 and 45,686.19 is: 63,046.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,220.19 : 109,323.86 = 45,686.19 : x
  2. Step 2: Convert to fraction form
    79,220.19/109,323.86 = 45,686.19/x
  3. Step 3: Cross multiply
    79,220.19x = 109,323.86 × 45,686.19
  4. Step 4: Simplify right side
    79,220.19x = 4,994,590,753.71
  5. Step 5: Solve for x
    x = 4,994,590,753.71/79,220.19
  6. Step 6: Final answer
    x = 63,046.94

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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.