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Finding the Fourth Proportional to 56,866.59, 85,373.79 and 43,728.18

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Solution

The fourth proportional to 56,866.59, 85,373.79 and 43,728.18 is: 65,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.59 : 85,373.79 = 43,728.18 : x
  2. Step 2: Convert to fraction form
    56,866.59/85,373.79 = 43,728.18/x
  3. Step 3: Cross multiply
    56,866.59x = 85,373.79 × 43,728.18
  4. Step 4: Simplify right side
    56,866.59x = 3,733,240,456.40
  5. Step 5: Solve for x
    x = 3,733,240,456.40/56,866.59
  6. Step 6: Final answer
    x = 65,649.10

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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.