Home / 61,887.11-85,360.10-56,799.05

Finding the Fourth Proportional to 61,887.11, 85,360.10 and 56,799.05

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Solution

The fourth proportional to 61,887.11, 85,360.10 and 56,799.05 is: 78,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,887.11 : 85,360.10 = 56,799.05 : x
  2. Step 2: Convert to fraction form
    61,887.11/85,360.10 = 56,799.05/x
  3. Step 3: Cross multiply
    61,887.11x = 85,360.10 × 56,799.05
  4. Step 4: Simplify right side
    61,887.11x = 4,848,371,877.11
  5. Step 5: Solve for x
    x = 4,848,371,877.11/61,887.11
  6. Step 6: Final answer
    x = 78,342.20

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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.