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Finding the Fourth Proportional to 61,974, 85,749.30 and 54,032.76

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Solution

The fourth proportional to 61,974, 85,749.30 and 54,032.76 is: 74,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,974 : 85,749.30 = 54,032.76 : x
  2. Step 2: Convert to fraction form
    61,974/85,749.30 = 54,032.76/x
  3. Step 3: Cross multiply
    61,974x = 85,749.30 × 54,032.76
  4. Step 4: Simplify right side
    61,974x = 4,633,271,347.07
  5. Step 5: Solve for x
    x = 4,633,271,347.07/61,974
  6. Step 6: Final answer
    x = 74,761.53

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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.