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Finding the Fourth Proportional to 66,482.40, 91,747.76 and 38,193.76

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Solution

The fourth proportional to 66,482.40, 91,747.76 and 38,193.76 is: 52,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.40 : 91,747.76 = 38,193.76 : x
  2. Step 2: Convert to fraction form
    66,482.40/91,747.76 = 38,193.76/x
  3. Step 3: Cross multiply
    66,482.40x = 91,747.76 × 38,193.76
  4. Step 4: Simplify right side
    66,482.40x = 3,504,191,925.98
  5. Step 5: Solve for x
    x = 3,504,191,925.98/66,482.40
  6. Step 6: Final answer
    x = 52,708.57

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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.