Home / 66,102.17-91,187.15-42,203.70

Finding the Fourth Proportional to 66,102.17, 91,187.15 and 42,203.70

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Solution

The fourth proportional to 66,102.17, 91,187.15 and 42,203.70 is: 58,219.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,102.17 : 91,187.15 = 42,203.70 : x
  2. Step 2: Convert to fraction form
    66,102.17/91,187.15 = 42,203.70/x
  3. Step 3: Cross multiply
    66,102.17x = 91,187.15 × 42,203.70
  4. Step 4: Simplify right side
    66,102.17x = 3,848,434,911.44
  5. Step 5: Solve for x
    x = 3,848,434,911.44/66,102.17
  6. Step 6: Final answer
    x = 58,219.50

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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.