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Finding the Fourth Proportional to 66,155.78, 91,244.68 and 45,771.76

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Solution

The fourth proportional to 66,155.78, 91,244.68 and 45,771.76 is: 63,130.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,155.78 : 91,244.68 = 45,771.76 : x
  2. Step 2: Convert to fraction form
    66,155.78/91,244.68 = 45,771.76/x
  3. Step 3: Cross multiply
    66,155.78x = 91,244.68 × 45,771.76
  4. Step 4: Simplify right side
    66,155.78x = 4,176,429,594.24
  5. Step 5: Solve for x
    x = 4,176,429,594.24/66,155.78
  6. Step 6: Final answer
    x = 63,130.23

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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.