Home / 90,859.08-125,402.04-55,079.76

Finding the Fourth Proportional to 90,859.08, 125,402.04 and 55,079.76

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Solution

The fourth proportional to 90,859.08, 125,402.04 and 55,079.76 is: 76,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,859.08 : 125,402.04 = 55,079.76 : x
  2. Step 2: Convert to fraction form
    90,859.08/125,402.04 = 55,079.76/x
  3. Step 3: Cross multiply
    90,859.08x = 125,402.04 × 55,079.76
  4. Step 4: Simplify right side
    90,859.08x = 6,907,114,266.71
  5. Step 5: Solve for x
    x = 6,907,114,266.71/90,859.08
  6. Step 6: Final answer
    x = 76,020.08

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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.