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Finding the Fourth Proportional to 60,503.61, 90,755.88 and 21,060.63

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Solution

The fourth proportional to 60,503.61, 90,755.88 and 21,060.63 is: 31,591.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,503.61 : 90,755.88 = 21,060.63 : x
  2. Step 2: Convert to fraction form
    60,503.61/90,755.88 = 21,060.63/x
  3. Step 3: Cross multiply
    60,503.61x = 90,755.88 × 21,060.63
  4. Step 4: Simplify right side
    60,503.61x = 1,911,376,009.00
  5. Step 5: Solve for x
    x = 1,911,376,009.00/60,503.61
  6. Step 6: Final answer
    x = 31,591.11

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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.