Home / 87,877.35-121,272.96-53,904.57

Finding the Fourth Proportional to 87,877.35, 121,272.96 and 53,904.57

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Solution

The fourth proportional to 87,877.35, 121,272.96 and 53,904.57 is: 74,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,877.35 : 121,272.96 = 53,904.57 : x
  2. Step 2: Convert to fraction form
    87,877.35/121,272.96 = 53,904.57/x
  3. Step 3: Cross multiply
    87,877.35x = 121,272.96 × 53,904.57
  4. Step 4: Simplify right side
    87,877.35x = 6,537,166,878.29
  5. Step 5: Solve for x
    x = 6,537,166,878.29/87,877.35
  6. Step 6: Final answer
    x = 74,389.67

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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.