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Finding the Fourth Proportional to 85,583, 118,064.77 and 55,378.06

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Solution

The fourth proportional to 85,583, 118,064.77 and 55,378.06 is: 76,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583 : 118,064.77 = 55,378.06 : x
  2. Step 2: Convert to fraction form
    85,583/118,064.77 = 55,378.06/x
  3. Step 3: Cross multiply
    85,583x = 118,064.77 × 55,378.06
  4. Step 4: Simplify right side
    85,583x = 6,538,197,916.95
  5. Step 5: Solve for x
    x = 6,538,197,916.95/85,583
  6. Step 6: Final answer
    x = 76,395.99

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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.