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Finding the Fourth Proportional to 85,303.98, 127,693.53 and 55,657.98

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Solution

The fourth proportional to 85,303.98, 127,693.53 and 55,657.98 is: 83,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,303.98 : 127,693.53 = 55,657.98 : x
  2. Step 2: Convert to fraction form
    85,303.98/127,693.53 = 55,657.98/x
  3. Step 3: Cross multiply
    85,303.98x = 127,693.53 × 55,657.98
  4. Step 4: Simplify right side
    85,303.98x = 7,107,163,938.87
  5. Step 5: Solve for x
    x = 7,107,163,938.87/85,303.98
  6. Step 6: Final answer
    x = 83,315.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.