Home / 78,515.35-108,341.34-53,077.06

Finding the Fourth Proportional to 78,515.35, 108,341.34 and 53,077.06

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Solution

The fourth proportional to 78,515.35, 108,341.34 and 53,077.06 is: 73,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,515.35 : 108,341.34 = 53,077.06 : x
  2. Step 2: Convert to fraction form
    78,515.35/108,341.34 = 53,077.06/x
  3. Step 3: Cross multiply
    78,515.35x = 108,341.34 × 53,077.06
  4. Step 4: Simplify right side
    78,515.35x = 5,750,439,803.66
  5. Step 5: Solve for x
    x = 5,750,439,803.66/78,515.35
  6. Step 6: Final answer
    x = 73,239.69

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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.