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Finding the Fourth Proportional to 75,999.60, 113,869.80 and 62,780.40

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Solution

The fourth proportional to 75,999.60, 113,869.80 and 62,780.40 is: 94,063.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,999.60 : 113,869.80 = 62,780.40 : x
  2. Step 2: Convert to fraction form
    75,999.60/113,869.80 = 62,780.40/x
  3. Step 3: Cross multiply
    75,999.60x = 113,869.80 × 62,780.40
  4. Step 4: Simplify right side
    75,999.60x = 7,148,791,591.92
  5. Step 5: Solve for x
    x = 7,148,791,591.92/75,999.60
  6. Step 6: Final answer
    x = 94,063.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.