Home / 78,014.16-107,613.36-47,813.04

Finding the Fourth Proportional to 78,014.16, 107,613.36 and 47,813.04

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Solution

The fourth proportional to 78,014.16, 107,613.36 and 47,813.04 is: 65,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,014.16 : 107,613.36 = 47,813.04 : x
  2. Step 2: Convert to fraction form
    78,014.16/107,613.36 = 47,813.04/x
  3. Step 3: Cross multiply
    78,014.16x = 107,613.36 × 47,813.04
  4. Step 4: Simplify right side
    78,014.16x = 5,145,321,886.21
  5. Step 5: Solve for x
    x = 5,145,321,886.21/78,014.16
  6. Step 6: Final answer
    x = 65,953.69

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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.