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Finding the Fourth Proportional to 60,554.88, 90,806.40 and 21,100.32

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Solution

The fourth proportional to 60,554.88, 90,806.40 and 21,100.32 is: 31,641.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,554.88 : 90,806.40 = 21,100.32 : x
  2. Step 2: Convert to fraction form
    60,554.88/90,806.40 = 21,100.32/x
  3. Step 3: Cross multiply
    60,554.88x = 90,806.40 × 21,100.32
  4. Step 4: Simplify right side
    60,554.88x = 1,916,044,098.05
  5. Step 5: Solve for x
    x = 1,916,044,098.05/60,554.88
  6. Step 6: Final answer
    x = 31,641.45

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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.