Home / 85,631.80-118,170-46,869.43

Finding the Fourth Proportional to 85,631.80, 118,170 and 46,869.43

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Solution

The fourth proportional to 85,631.80, 118,170 and 46,869.43 is: 64,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.80 : 118,170 = 46,869.43 : x
  2. Step 2: Convert to fraction form
    85,631.80/118,170 = 46,869.43/x
  3. Step 3: Cross multiply
    85,631.80x = 118,170 × 46,869.43
  4. Step 4: Simplify right side
    85,631.80x = 5,538,560,543.10
  5. Step 5: Solve for x
    x = 5,538,560,543.10/85,631.80
  6. Step 6: Final answer
    x = 64,678.78

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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.