Home / 40,429,138.80-60,643,708.20-18,905,778.30

Finding the Fourth Proportional to 40,429,138.80, 60,643,708.20 and 18,905,778.30

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Solution

The fourth proportional to 40,429,138.80, 60,643,708.20 and 18,905,778.30 is: 28,358,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,429,138.80 : 60,643,708.20 = 18,905,778.30 : x
  2. Step 2: Convert to fraction form
    40,429,138.80/60,643,708.20 = 18,905,778.30/x
  3. Step 3: Cross multiply
    40,429,138.80x = 60,643,708.20 × 18,905,778.30
  4. Step 4: Simplify right side
    40,429,138.80x = 1,146,516,502,519,092.25
  5. Step 5: Solve for x
    x = 1,146,516,502,519,092.25/40,429,138.80
  6. Step 6: Final answer
    x = 28,358,667.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.