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Finding the Fourth Proportional to 66,373.86, 99,557.88 and 21,394.22

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Solution

The fourth proportional to 66,373.86, 99,557.88 and 21,394.22 is: 32,090.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,373.86 : 99,557.88 = 21,394.22 : x
  2. Step 2: Convert to fraction form
    66,373.86/99,557.88 = 21,394.22/x
  3. Step 3: Cross multiply
    66,373.86x = 99,557.88 × 21,394.22
  4. Step 4: Simplify right side
    66,373.86x = 2,129,963,187.45
  5. Step 5: Solve for x
    x = 2,129,963,187.45/66,373.86
  6. Step 6: Final answer
    x = 32,090.39

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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.