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Finding the Fourth Proportional to 66,392.20, 99,588.30 and 61,323.40

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Solution

The fourth proportional to 66,392.20, 99,588.30 and 61,323.40 is: 91,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,392.20 : 99,588.30 = 61,323.40 : x
  2. Step 2: Convert to fraction form
    66,392.20/99,588.30 = 61,323.40/x
  3. Step 3: Cross multiply
    66,392.20x = 99,588.30 × 61,323.40
  4. Step 4: Simplify right side
    66,392.20x = 6,107,093,156.22
  5. Step 5: Solve for x
    x = 6,107,093,156.22/66,392.20
  6. Step 6: Final answer
    x = 91,985.10

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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.