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Finding the Fourth Proportional to 66,390.58, 91,616.14 and 37,710.15

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Solution

The fourth proportional to 66,390.58, 91,616.14 and 37,710.15 is: 52,038.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.58 : 91,616.14 = 37,710.15 : x
  2. Step 2: Convert to fraction form
    66,390.58/91,616.14 = 37,710.15/x
  3. Step 3: Cross multiply
    66,390.58x = 91,616.14 × 37,710.15
  4. Step 4: Simplify right side
    66,390.58x = 3,454,858,680.70
  5. Step 5: Solve for x
    x = 3,454,858,680.70/66,390.58
  6. Step 6: Final answer
    x = 52,038.39

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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.