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Finding the Fourth Proportional to 66,487.99, 91,701.37 and 42,616.88

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Solution

The fourth proportional to 66,487.99, 91,701.37 and 42,616.88 is: 58,777.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,487.99 : 91,701.37 = 42,616.88 : x
  2. Step 2: Convert to fraction form
    66,487.99/91,701.37 = 42,616.88/x
  3. Step 3: Cross multiply
    66,487.99x = 91,701.37 × 42,616.88
  4. Step 4: Simplify right side
    66,487.99x = 3,908,026,495.87
  5. Step 5: Solve for x
    x = 3,908,026,495.87/66,487.99
  6. Step 6: Final answer
    x = 58,777.93

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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.