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Finding the Fourth Proportional to 66,872,493.60, 100,308,740.40 and 48,638,162.40

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Solution

The fourth proportional to 66,872,493.60, 100,308,740.40 and 48,638,162.40 is: 72,957,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,872,493.60 : 100,308,740.40 = 48,638,162.40 : x
  2. Step 2: Convert to fraction form
    66,872,493.60/100,308,740.40 = 48,638,162.40/x
  3. Step 3: Cross multiply
    66,872,493.60x = 100,308,740.40 × 48,638,162.40
  4. Step 4: Simplify right side
    66,872,493.60x = 4,878,832,805,714,641
  5. Step 5: Solve for x
    x = 4,878,832,805,714,641/66,872,493.60
  6. Step 6: Final answer
    x = 72,957,243.60

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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.