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Finding the Fourth Proportional to 85,615.95, 118,141.95 and 57,964.37

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Solution

The fourth proportional to 85,615.95, 118,141.95 and 57,964.37 is: 79,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,615.95 : 118,141.95 = 57,964.37 : x
  2. Step 2: Convert to fraction form
    85,615.95/118,141.95 = 57,964.37/x
  3. Step 3: Cross multiply
    85,615.95x = 118,141.95 × 57,964.37
  4. Step 4: Simplify right side
    85,615.95x = 6,848,023,111.61
  5. Step 5: Solve for x
    x = 6,848,023,111.61/85,615.95
  6. Step 6: Final answer
    x = 79,985.37

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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.