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Finding the Fourth Proportional to 66,339.50, 91,547.20 and 36,125.20

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Solution

The fourth proportional to 66,339.50, 91,547.20 and 36,125.20 is: 49,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339.50 : 91,547.20 = 36,125.20 : x
  2. Step 2: Convert to fraction form
    66,339.50/91,547.20 = 36,125.20/x
  3. Step 3: Cross multiply
    66,339.50x = 91,547.20 × 36,125.20
  4. Step 4: Simplify right side
    66,339.50x = 3,307,160,909.44
  5. Step 5: Solve for x
    x = 3,307,160,909.44/66,339.50
  6. Step 6: Final answer
    x = 49,852.06

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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.