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Finding the Fourth Proportional to 66,166.55, 99,085.80 and 42,437.60

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Solution

The fourth proportional to 66,166.55, 99,085.80 and 42,437.60 is: 63,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,166.55 : 99,085.80 = 42,437.60 : x
  2. Step 2: Convert to fraction form
    66,166.55/99,085.80 = 42,437.60/x
  3. Step 3: Cross multiply
    66,166.55x = 99,085.80 × 42,437.60
  4. Step 4: Simplify right side
    66,166.55x = 4,204,963,546.08
  5. Step 5: Solve for x
    x = 4,204,963,546.08/66,166.55
  6. Step 6: Final answer
    x = 63,551.20

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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.