Home / 42,390,399.60-63,593,893.80-18,129,279.60

Finding the Fourth Proportional to 42,390,399.60, 63,593,893.80 and 18,129,279.60

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Solution

The fourth proportional to 42,390,399.60, 63,593,893.80 and 18,129,279.60 is: 27,197,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,390,399.60 : 63,593,893.80 = 18,129,279.60 : x
  2. Step 2: Convert to fraction form
    42,390,399.60/63,593,893.80 = 18,129,279.60/x
  3. Step 3: Cross multiply
    42,390,399.60x = 63,593,893.80 × 18,129,279.60
  4. Step 4: Simplify right side
    42,390,399.60x = 1,152,911,481,552,906.50
  5. Step 5: Solve for x
    x = 1,152,911,481,552,906.50/42,390,399.60
  6. Step 6: Final answer
    x = 27,197,466.70

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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.