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Finding the Fourth Proportional to 85,812.56, 118,421.34 and 47,572.01

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Solution

The fourth proportional to 85,812.56, 118,421.34 and 47,572.01 is: 65,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812.56 : 118,421.34 = 47,572.01 : x
  2. Step 2: Convert to fraction form
    85,812.56/118,421.34 = 47,572.01/x
  3. Step 3: Cross multiply
    85,812.56x = 118,421.34 × 47,572.01
  4. Step 4: Simplify right side
    85,812.56x = 5,633,541,111.86
  5. Step 5: Solve for x
    x = 5,633,541,111.86/85,812.56
  6. Step 6: Final answer
    x = 65,649.37

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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.