Home / 61,938.10-85,510.05-40,778.88

Finding the Fourth Proportional to 61,938.10, 85,510.05 and 40,778.88

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Solution

The fourth proportional to 61,938.10, 85,510.05 and 40,778.88 is: 56,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938.10 : 85,510.05 = 40,778.88 : x
  2. Step 2: Convert to fraction form
    61,938.10/85,510.05 = 40,778.88/x
  3. Step 3: Cross multiply
    61,938.10x = 85,510.05 × 40,778.88
  4. Step 4: Simplify right side
    61,938.10x = 3,487,004,067.74
  5. Step 5: Solve for x
    x = 3,487,004,067.74/61,938.10
  6. Step 6: Final answer
    x = 56,298.21

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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.