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Finding the Fourth Proportional to 60,661.64, 91,010.21 and 31,100.10

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Solution

The fourth proportional to 60,661.64, 91,010.21 and 31,100.10 is: 46,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,661.64 : 91,010.21 = 31,100.10 : x
  2. Step 2: Convert to fraction form
    60,661.64/91,010.21 = 31,100.10/x
  3. Step 3: Cross multiply
    60,661.64x = 91,010.21 × 31,100.10
  4. Step 4: Simplify right side
    60,661.64x = 2,830,426,476.52
  5. Step 5: Solve for x
    x = 2,830,426,476.52/60,661.64
  6. Step 6: Final answer
    x = 46,659.25

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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.