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Finding the Fourth Proportional to 66,130.71, 91,288.30 and 44,649.56

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Solution

The fourth proportional to 66,130.71, 91,288.30 and 44,649.56 is: 61,635.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,130.71 : 91,288.30 = 44,649.56 : x
  2. Step 2: Convert to fraction form
    66,130.71/91,288.30 = 44,649.56/x
  3. Step 3: Cross multiply
    66,130.71x = 91,288.30 × 44,649.56
  4. Step 4: Simplify right side
    66,130.71x = 4,075,982,428.15
  5. Step 5: Solve for x
    x = 4,075,982,428.15/66,130.71
  6. Step 6: Final answer
    x = 61,635.24

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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.