Home / 76,349.80-105,331.62-51,207.40

Finding the Fourth Proportional to 76,349.80, 105,331.62 and 51,207.40

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Solution

The fourth proportional to 76,349.80, 105,331.62 and 51,207.40 is: 70,645.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,349.80 : 105,331.62 = 51,207.40 : x
  2. Step 2: Convert to fraction form
    76,349.80/105,331.62 = 51,207.40/x
  3. Step 3: Cross multiply
    76,349.80x = 105,331.62 × 51,207.40
  4. Step 4: Simplify right side
    76,349.80x = 5,393,758,397.99
  5. Step 5: Solve for x
    x = 5,393,758,397.99/76,349.80
  6. Step 6: Final answer
    x = 70,645.35

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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.