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Finding the Fourth Proportional to 90,984, 125,558.82 and 53,259.06

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Solution

The fourth proportional to 90,984, 125,558.82 and 53,259.06 is: 73,498.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,984 : 125,558.82 = 53,259.06 : x
  2. Step 2: Convert to fraction form
    90,984/125,558.82 = 53,259.06/x
  3. Step 3: Cross multiply
    90,984x = 125,558.82 × 53,259.06
  4. Step 4: Simplify right side
    90,984x = 6,687,144,727.91
  5. Step 5: Solve for x
    x = 6,687,144,727.91/90,984
  6. Step 6: Final answer
    x = 73,498.03

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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.