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Finding the Fourth Proportional to 58,245.30, 80,409.78 and 39,155.76

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Solution

The fourth proportional to 58,245.30, 80,409.78 and 39,155.76 is: 54,055.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,245.30 : 80,409.78 = 39,155.76 : x
  2. Step 2: Convert to fraction form
    58,245.30/80,409.78 = 39,155.76/x
  3. Step 3: Cross multiply
    58,245.30x = 80,409.78 × 39,155.76
  4. Step 4: Simplify right side
    58,245.30x = 3,148,506,047.33
  5. Step 5: Solve for x
    x = 3,148,506,047.33/58,245.30
  6. Step 6: Final answer
    x = 54,055.97

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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.