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Finding the Fourth Proportional to 78,987.60, 108,987.77 and 44,995.34

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Solution

The fourth proportional to 78,987.60, 108,987.77 and 44,995.34 is: 62,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987.60 : 108,987.77 = 44,995.34 : x
  2. Step 2: Convert to fraction form
    78,987.60/108,987.77 = 44,995.34/x
  3. Step 3: Cross multiply
    78,987.60x = 108,987.77 × 44,995.34
  4. Step 4: Simplify right side
    78,987.60x = 4,903,942,151.95
  5. Step 5: Solve for x
    x = 4,903,942,151.95/78,987.60
  6. Step 6: Final answer
    x = 62,084.96

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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.