Home / 85,780.37-118,381.64-47,539.13

Finding the Fourth Proportional to 85,780.37, 118,381.64 and 47,539.13

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Solution

The fourth proportional to 85,780.37, 118,381.64 and 47,539.13 is: 65,606.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,780.37 : 118,381.64 = 47,539.13 : x
  2. Step 2: Convert to fraction form
    85,780.37/118,381.64 = 47,539.13/x
  3. Step 3: Cross multiply
    85,780.37x = 118,381.64 × 47,539.13
  4. Step 4: Simplify right side
    85,780.37x = 5,627,759,343.97
  5. Step 5: Solve for x
    x = 5,627,759,343.97/85,780.37
  6. Step 6: Final answer
    x = 65,606.61

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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.