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Finding the Fourth Proportional to 78,498.55, 108,289.91 and 46,644.90

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Solution

The fourth proportional to 78,498.55, 108,289.91 and 46,644.90 is: 64,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,498.55 : 108,289.91 = 46,644.90 : x
  2. Step 2: Convert to fraction form
    78,498.55/108,289.91 = 46,644.90/x
  3. Step 3: Cross multiply
    78,498.55x = 108,289.91 × 46,644.90
  4. Step 4: Simplify right side
    78,498.55x = 5,051,172,022.96
  5. Step 5: Solve for x
    x = 5,051,172,022.96/78,498.55
  6. Step 6: Final answer
    x = 64,347.33

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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.