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Finding the Fourth Proportional to 61,068.70, 91,603.05 and 51,227.20

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Solution

The fourth proportional to 61,068.70, 91,603.05 and 51,227.20 is: 76,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,068.70 : 91,603.05 = 51,227.20 : x
  2. Step 2: Convert to fraction form
    61,068.70/91,603.05 = 51,227.20/x
  3. Step 3: Cross multiply
    61,068.70x = 91,603.05 × 51,227.20
  4. Step 4: Simplify right side
    61,068.70x = 4,692,567,762.96
  5. Step 5: Solve for x
    x = 4,692,567,762.96/61,068.70
  6. Step 6: Final answer
    x = 76,840.80

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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.