Home / 66,915.04-100,405.32-47,319.52

Finding the Fourth Proportional to 66,915.04, 100,405.32 and 47,319.52

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Solution

The fourth proportional to 66,915.04, 100,405.32 and 47,319.52 is: 71,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.04 : 100,405.32 = 47,319.52 : x
  2. Step 2: Convert to fraction form
    66,915.04/100,405.32 = 47,319.52/x
  3. Step 3: Cross multiply
    66,915.04x = 100,405.32 × 47,319.52
  4. Step 4: Simplify right side
    66,915.04x = 4,751,131,547.85
  5. Step 5: Solve for x
    x = 4,751,131,547.85/66,915.04
  6. Step 6: Final answer
    x = 71,002.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.