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Finding the Fourth Proportional to 58,478.77, 80,709.79 and 38,393.90

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Solution

The fourth proportional to 58,478.77, 80,709.79 and 38,393.90 is: 52,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,478.77 : 80,709.79 = 38,393.90 : x
  2. Step 2: Convert to fraction form
    58,478.77/80,709.79 = 38,393.90/x
  3. Step 3: Cross multiply
    58,478.77x = 80,709.79 × 38,393.90
  4. Step 4: Simplify right side
    58,478.77x = 3,098,763,606.28
  5. Step 5: Solve for x
    x = 3,098,763,606.28/58,478.77
  6. Step 6: Final answer
    x = 52,989.55

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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.