Home / 90,638,410.86-135,860,819.20-51,693,003.92

Finding the Fourth Proportional to 90,638,410.86, 135,860,819.20 and 51,693,003.92

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Solution

The fourth proportional to 90,638,410.86, 135,860,819.20 and 51,693,003.92 is: 77,484,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638,410.86 : 135,860,819.20 = 51,693,003.92 : x
  2. Step 2: Convert to fraction form
    90,638,410.86/135,860,819.20 = 51,693,003.92/x
  3. Step 3: Cross multiply
    90,638,410.86x = 135,860,819.20 × 51,693,003.92
  4. Step 4: Simplify right side
    90,638,410.86x = 7,023,053,859,690,430
  5. Step 5: Solve for x
    x = 7,023,053,859,690,430/90,638,410.86
  6. Step 6: Final answer
    x = 77,484,300.45

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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.