Home / 85,790.72-118,397.76-53,986.88

Finding the Fourth Proportional to 85,790.72, 118,397.76 and 53,986.88

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Solution

The fourth proportional to 85,790.72, 118,397.76 and 53,986.88 is: 74,506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,790.72 : 118,397.76 = 53,986.88 : x
  2. Step 2: Convert to fraction form
    85,790.72/118,397.76 = 53,986.88/x
  3. Step 3: Cross multiply
    85,790.72x = 118,397.76 × 53,986.88
  4. Step 4: Simplify right side
    85,790.72x = 6,391,925,661.39
  5. Step 5: Solve for x
    x = 6,391,925,661.39/85,790.72
  6. Step 6: Final answer
    x = 74,506.03

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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.