Home / 83,720.05-115,466.85-55,069.13

Finding the Fourth Proportional to 83,720.05, 115,466.85 and 55,069.13

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Solution

The fourth proportional to 83,720.05, 115,466.85 and 55,069.13 is: 75,951.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,720.05 : 115,466.85 = 55,069.13 : x
  2. Step 2: Convert to fraction form
    83,720.05/115,466.85 = 55,069.13/x
  3. Step 3: Cross multiply
    83,720.05x = 115,466.85 × 55,069.13
  4. Step 4: Simplify right side
    83,720.05x = 6,358,658,973.34
  5. Step 5: Solve for x
    x = 6,358,658,973.34/83,720.05
  6. Step 6: Final answer
    x = 75,951.45

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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.