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Finding the Fourth Proportional to 48,561,657.60, 72,842,486.40 and 12,659,865.60

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Solution

The fourth proportional to 48,561,657.60, 72,842,486.40 and 12,659,865.60 is: 18,989,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,561,657.60 : 72,842,486.40 = 12,659,865.60 : x
  2. Step 2: Convert to fraction form
    48,561,657.60/72,842,486.40 = 12,659,865.60/x
  3. Step 3: Cross multiply
    48,561,657.60x = 72,842,486.40 × 12,659,865.60
  4. Step 4: Simplify right side
    48,561,657.60x = 922,176,087,793,827.88
  5. Step 5: Solve for x
    x = 922,176,087,793,827.88/48,561,657.60
  6. Step 6: Final answer
    x = 18,989,798.40

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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.