Home / 66,015.16-91,113.54-51,646.36

Finding the Fourth Proportional to 66,015.16, 91,113.54 and 51,646.36

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Solution

The fourth proportional to 66,015.16, 91,113.54 and 51,646.36 is: 71,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,015.16 : 91,113.54 = 51,646.36 : x
  2. Step 2: Convert to fraction form
    66,015.16/91,113.54 = 51,646.36/x
  3. Step 3: Cross multiply
    66,015.16x = 91,113.54 × 51,646.36
  4. Step 4: Simplify right side
    66,015.16x = 4,705,682,687.71
  5. Step 5: Solve for x
    x = 4,705,682,687.71/66,015.16
  6. Step 6: Final answer
    x = 71,281.85

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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.