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Finding the Fourth Proportional to 107,305.60, 148,088.80 and 61,985.48

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Solution

The fourth proportional to 107,305.60, 148,088.80 and 61,985.48 is: 85,544.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,305.60 : 148,088.80 = 61,985.48 : x
  2. Step 2: Convert to fraction form
    107,305.60/148,088.80 = 61,985.48/x
  3. Step 3: Cross multiply
    107,305.60x = 148,088.80 × 61,985.48
  4. Step 4: Simplify right side
    107,305.60x = 9,179,355,350.62
  5. Step 5: Solve for x
    x = 9,179,355,350.62/107,305.60
  6. Step 6: Final answer
    x = 85,544.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.