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Finding the Fourth Proportional to 85,642.64, 118,187.08 and 47,404.82

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Solution

The fourth proportional to 85,642.64, 118,187.08 and 47,404.82 is: 65,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,642.64 : 118,187.08 = 47,404.82 : x
  2. Step 2: Convert to fraction form
    85,642.64/118,187.08 = 47,404.82/x
  3. Step 3: Cross multiply
    85,642.64x = 118,187.08 × 47,404.82
  4. Step 4: Simplify right side
    85,642.64x = 5,602,637,430.68
  5. Step 5: Solve for x
    x = 5,602,637,430.68/85,642.64
  6. Step 6: Final answer
    x = 65,418.78

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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.