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Finding the Fourth Proportional to 66,071.52, 91,156.59 and 37,387.20

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Solution

The fourth proportional to 66,071.52, 91,156.59 and 37,387.20 is: 51,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,071.52 : 91,156.59 = 37,387.20 : x
  2. Step 2: Convert to fraction form
    66,071.52/91,156.59 = 37,387.20/x
  3. Step 3: Cross multiply
    66,071.52x = 91,156.59 × 37,387.20
  4. Step 4: Simplify right side
    66,071.52x = 3,408,089,661.65
  5. Step 5: Solve for x
    x = 3,408,089,661.65/66,071.52
  6. Step 6: Final answer
    x = 51,581.83

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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.