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Finding the Fourth Proportional to 66,461.10, 91,664.49 and 42,590.00

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Solution

The fourth proportional to 66,461.10, 91,664.49 and 42,590.00 is: 58,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.10 : 91,664.49 = 42,590.00 : x
  2. Step 2: Convert to fraction form
    66,461.10/91,664.49 = 42,590.00/x
  3. Step 3: Cross multiply
    66,461.10x = 91,664.49 × 42,590.00
  4. Step 4: Simplify right side
    66,461.10x = 3,903,990,674.23
  5. Step 5: Solve for x
    x = 3,903,990,674.23/66,461.10
  6. Step 6: Final answer
    x = 58,740.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.