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Finding the Fourth Proportional to 58,742.80, 88,114.20 and 21,821.20

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Solution

The fourth proportional to 58,742.80, 88,114.20 and 21,821.20 is: 32,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,742.80 : 88,114.20 = 21,821.20 : x
  2. Step 2: Convert to fraction form
    58,742.80/88,114.20 = 21,821.20/x
  3. Step 3: Cross multiply
    58,742.80x = 88,114.20 × 21,821.20
  4. Step 4: Simplify right side
    58,742.80x = 1,922,757,581.04
  5. Step 5: Solve for x
    x = 1,922,757,581.04/58,742.80
  6. Step 6: Final answer
    x = 32,731.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.