Home / 83,643.11-115,427.60-45,402.64

Finding the Fourth Proportional to 83,643.11, 115,427.60 and 45,402.64

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Solution

The fourth proportional to 83,643.11, 115,427.60 and 45,402.64 is: 62,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,643.11 : 115,427.60 = 45,402.64 : x
  2. Step 2: Convert to fraction form
    83,643.11/115,427.60 = 45,402.64/x
  3. Step 3: Cross multiply
    83,643.11x = 115,427.60 × 45,402.64
  4. Step 4: Simplify right side
    83,643.11x = 5,240,717,768.86
  5. Step 5: Solve for x
    x = 5,240,717,768.86/83,643.11
  6. Step 6: Final answer
    x = 62,655.70

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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.