Home / 66,051.36-91,117.44-42,153.12

Finding the Fourth Proportional to 66,051.36, 91,117.44 and 42,153.12

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Solution

The fourth proportional to 66,051.36, 91,117.44 and 42,153.12 is: 58,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,051.36 : 91,117.44 = 42,153.12 : x
  2. Step 2: Convert to fraction form
    66,051.36/91,117.44 = 42,153.12/x
  3. Step 3: Cross multiply
    66,051.36x = 91,117.44 × 42,153.12
  4. Step 4: Simplify right side
    66,051.36x = 3,840,884,382.41
  5. Step 5: Solve for x
    x = 3,840,884,382.41/66,051.36
  6. Step 6: Final answer
    x = 58,149.97

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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.