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Finding the Fourth Proportional to 76,188.50, 105,140.91 and 45,967.98

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Solution

The fourth proportional to 76,188.50, 105,140.91 and 45,967.98 is: 63,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,188.50 : 105,140.91 = 45,967.98 : x
  2. Step 2: Convert to fraction form
    76,188.50/105,140.91 = 45,967.98/x
  3. Step 3: Cross multiply
    76,188.50x = 105,140.91 × 45,967.98
  4. Step 4: Simplify right side
    76,188.50x = 4,833,115,426.87
  5. Step 5: Solve for x
    x = 4,833,115,426.87/76,188.50
  6. Step 6: Final answer
    x = 63,436.28

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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.