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Finding the Fourth Proportional to 90,445.94, 124,789.94 and 71,266.26

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Solution

The fourth proportional to 90,445.94, 124,789.94 and 71,266.26 is: 98,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,445.94 : 124,789.94 = 71,266.26 : x
  2. Step 2: Convert to fraction form
    90,445.94/124,789.94 = 71,266.26/x
  3. Step 3: Cross multiply
    90,445.94x = 124,789.94 × 71,266.26
  4. Step 4: Simplify right side
    90,445.94x = 8,893,312,309.42
  5. Step 5: Solve for x
    x = 8,893,312,309.42/90,445.94
  6. Step 6: Final answer
    x = 98,327.38

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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.