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Finding the Fourth Proportional to 71,064.80, 98,055.60 and 49,810.40

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Solution

The fourth proportional to 71,064.80, 98,055.60 and 49,810.40 is: 68,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,064.80 : 98,055.60 = 49,810.40 : x
  2. Step 2: Convert to fraction form
    71,064.80/98,055.60 = 49,810.40/x
  3. Step 3: Cross multiply
    71,064.80x = 98,055.60 × 49,810.40
  4. Step 4: Simplify right side
    71,064.80x = 4,884,188,658.24
  5. Step 5: Solve for x
    x = 4,884,188,658.24/71,064.80
  6. Step 6: Final answer
    x = 68,728.66

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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.