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Finding the Fourth Proportional to 66,070.76, 91,178.10 and 35,856.59

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Solution

The fourth proportional to 66,070.76, 91,178.10 and 35,856.59 is: 49,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,070.76 : 91,178.10 = 35,856.59 : x
  2. Step 2: Convert to fraction form
    66,070.76/91,178.10 = 35,856.59/x
  3. Step 3: Cross multiply
    66,070.76x = 91,178.10 × 35,856.59
  4. Step 4: Simplify right side
    66,070.76x = 3,269,335,292.79
  5. Step 5: Solve for x
    x = 3,269,335,292.79/66,070.76
  6. Step 6: Final answer
    x = 49,482.34

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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.