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Finding the Fourth Proportional to 29,892,612.80, 44,849,416.80 and 12,858,507.20

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Solution

The fourth proportional to 29,892,612.80, 44,849,416.80 and 12,858,507.20 is: 19,292,276.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,892,612.80 : 44,849,416.80 = 12,858,507.20 : x
  2. Step 2: Convert to fraction form
    29,892,612.80/44,849,416.80 = 12,858,507.20/x
  3. Step 3: Cross multiply
    29,892,612.80x = 44,849,416.80 × 12,858,507.20
  4. Step 4: Simplify right side
    29,892,612.80x = 576,696,548,838,600.88
  5. Step 5: Solve for x
    x = 576,696,548,838,600.88/29,892,612.80
  6. Step 6: Final answer
    x = 19,292,276.41

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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.