Home / 40,116,015.15-55,360,321.88-21,781,300.65

Finding the Fourth Proportional to 40,116,015.15, 55,360,321.88 and 21,781,300.65

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Solution

The fourth proportional to 40,116,015.15, 55,360,321.88 and 21,781,300.65 is: 30,058,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,116,015.15 : 55,360,321.88 = 21,781,300.65 : x
  2. Step 2: Convert to fraction form
    40,116,015.15/55,360,321.88 = 21,781,300.65/x
  3. Step 3: Cross multiply
    40,116,015.15x = 55,360,321.88 × 21,781,300.65
  4. Step 4: Simplify right side
    40,116,015.15x = 1,205,819,814,840,146.75
  5. Step 5: Solve for x
    x = 1,205,819,814,840,146.75/40,116,015.15
  6. Step 6: Final answer
    x = 30,058,314.87

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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.