Home / 81,860,859.60-122,838,528.60-30,748,045.20

Finding the Fourth Proportional to 81,860,859.60, 122,838,528.60 and 30,748,045.20

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Solution

The fourth proportional to 81,860,859.60, 122,838,528.60 and 30,748,045.20 is: 46,139,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,860,859.60 : 122,838,528.60 = 30,748,045.20 : x
  2. Step 2: Convert to fraction form
    81,860,859.60/122,838,528.60 = 30,748,045.20/x
  3. Step 3: Cross multiply
    81,860,859.60x = 122,838,528.60 × 30,748,045.20
  4. Step 4: Simplify right side
    81,860,859.60x = 3,777,044,629,694,292.50
  5. Step 5: Solve for x
    x = 3,777,044,629,694,292.50/81,860,859.60
  6. Step 6: Final answer
    x = 46,139,811.48

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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.