Home / 66,432.56-91,680.59-38,140.07

Finding the Fourth Proportional to 66,432.56, 91,680.59 and 38,140.07

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Solution

The fourth proportional to 66,432.56, 91,680.59 and 38,140.07 is: 52,635.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432.56 : 91,680.59 = 38,140.07 : x
  2. Step 2: Convert to fraction form
    66,432.56/91,680.59 = 38,140.07/x
  3. Step 3: Cross multiply
    66,432.56x = 91,680.59 × 38,140.07
  4. Step 4: Simplify right side
    66,432.56x = 3,496,704,158.74
  5. Step 5: Solve for x
    x = 3,496,704,158.74/66,432.56
  6. Step 6: Final answer
    x = 52,635.39

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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.