Home / 85,609.89-118,145.12-47,368.80

Finding the Fourth Proportional to 85,609.89, 118,145.12 and 47,368.80

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Solution

The fourth proportional to 85,609.89, 118,145.12 and 47,368.80 is: 65,370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,609.89 : 118,145.12 = 47,368.80 : x
  2. Step 2: Convert to fraction form
    85,609.89/118,145.12 = 47,368.80/x
  3. Step 3: Cross multiply
    85,609.89x = 118,145.12 × 47,368.80
  4. Step 4: Simplify right side
    85,609.89x = 5,596,392,323.41
  5. Step 5: Solve for x
    x = 5,596,392,323.41/85,609.89
  6. Step 6: Final answer
    x = 65,370.86

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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.