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Finding the Fourth Proportional to 61,555.98, 85,090.68 and 54,907.50

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Solution

The fourth proportional to 61,555.98, 85,090.68 and 54,907.50 is: 75,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,555.98 : 85,090.68 = 54,907.50 : x
  2. Step 2: Convert to fraction form
    61,555.98/85,090.68 = 54,907.50/x
  3. Step 3: Cross multiply
    61,555.98x = 85,090.68 × 54,907.50
  4. Step 4: Simplify right side
    61,555.98x = 4,672,116,512.10
  5. Step 5: Solve for x
    x = 4,672,116,512.10/61,555.98
  6. Step 6: Final answer
    x = 75,900.29

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1.5x scale

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.