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Finding the Fourth Proportional to 60,641.72, 91,047.66 and 31,080.76

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Solution

The fourth proportional to 60,641.72, 91,047.66 and 31,080.76 is: 46,664.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,641.72 : 91,047.66 = 31,080.76 : x
  2. Step 2: Convert to fraction form
    60,641.72/91,047.66 = 31,080.76/x
  3. Step 3: Cross multiply
    60,641.72x = 91,047.66 × 31,080.76
  4. Step 4: Simplify right side
    60,641.72x = 2,829,830,469.02
  5. Step 5: Solve for x
    x = 2,829,830,469.02/60,641.72
  6. Step 6: Final answer
    x = 46,664.75

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1.5x scale

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.