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Finding the Fourth Proportional to 60,587.49, 90,881.90 and 21,144.75

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Solution

The fourth proportional to 60,587.49, 90,881.90 and 21,144.75 is: 31,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,587.49 : 90,881.90 = 21,144.75 : x
  2. Step 2: Convert to fraction form
    60,587.49/90,881.90 = 21,144.75/x
  3. Step 3: Cross multiply
    60,587.49x = 90,881.90 × 21,144.75
  4. Step 4: Simplify right side
    60,587.49x = 1,921,674,687.79
  5. Step 5: Solve for x
    x = 1,921,674,687.79/60,587.49
  6. Step 6: Final answer
    x = 31,717.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.