Home / 79,308.90-109,436.13-45,319.55

Finding the Fourth Proportional to 79,308.90, 109,436.13 and 45,319.55

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Solution

The fourth proportional to 79,308.90, 109,436.13 and 45,319.55 is: 62,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,308.90 : 109,436.13 = 45,319.55 : x
  2. Step 2: Convert to fraction form
    79,308.90/109,436.13 = 45,319.55/x
  3. Step 3: Cross multiply
    79,308.90x = 109,436.13 × 45,319.55
  4. Step 4: Simplify right side
    79,308.90x = 4,959,595,618.16
  5. Step 5: Solve for x
    x = 4,959,595,618.16/79,308.90
  6. Step 6: Final answer
    x = 62,535.17

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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.