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Finding the Fourth Proportional to 78,358.86, 108,191.52 and 48,184.74

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Solution

The fourth proportional to 78,358.86, 108,191.52 and 48,184.74 is: 66,529.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.86 : 108,191.52 = 48,184.74 : x
  2. Step 2: Convert to fraction form
    78,358.86/108,191.52 = 48,184.74/x
  3. Step 3: Cross multiply
    78,358.86x = 108,191.52 × 48,184.74
  4. Step 4: Simplify right side
    78,358.86x = 5,213,180,261.40
  5. Step 5: Solve for x
    x = 5,213,180,261.40/78,358.86
  6. Step 6: Final answer
    x = 66,529.56

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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.