Home / 61,931.21-85,500.47-40,771.98

Finding the Fourth Proportional to 61,931.21, 85,500.47 and 40,771.98

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Solution

The fourth proportional to 61,931.21, 85,500.47 and 40,771.98 is: 56,288.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,931.21 : 85,500.47 = 40,771.98 : x
  2. Step 2: Convert to fraction form
    61,931.21/85,500.47 = 40,771.98/x
  3. Step 3: Cross multiply
    61,931.21x = 85,500.47 × 40,771.98
  4. Step 4: Simplify right side
    61,931.21x = 3,486,023,554.76
  5. Step 5: Solve for x
    x = 3,486,023,554.76/61,931.21
  6. Step 6: Final answer
    x = 56,288.64

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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.