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Finding the Fourth Proportional to 66,148.34, 91,017.96 and 64,573.70

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Solution

The fourth proportional to 66,148.34, 91,017.96 and 64,573.70 is: 88,851.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,148.34 : 91,017.96 = 64,573.70 : x
  2. Step 2: Convert to fraction form
    66,148.34/91,017.96 = 64,573.70/x
  3. Step 3: Cross multiply
    66,148.34x = 91,017.96 × 64,573.70
  4. Step 4: Simplify right side
    66,148.34x = 5,877,366,443.65
  5. Step 5: Solve for x
    x = 5,877,366,443.65/66,148.34
  6. Step 6: Final answer
    x = 88,851.31

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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.