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Finding the Fourth Proportional to 78,326.70, 108,147.03 and 48,152.50

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Solution

The fourth proportional to 78,326.70, 108,147.03 and 48,152.50 is: 66,484.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,326.70 : 108,147.03 = 48,152.50 : x
  2. Step 2: Convert to fraction form
    78,326.70/108,147.03 = 48,152.50/x
  3. Step 3: Cross multiply
    78,326.70x = 108,147.03 × 48,152.50
  4. Step 4: Simplify right side
    78,326.70x = 5,207,549,862.08
  5. Step 5: Solve for x
    x = 5,207,549,862.08/78,326.70
  6. Step 6: Final answer
    x = 66,484.99

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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.