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Finding the Fourth Proportional to 99,307.60, 148,961.40 and 36,965.20

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Solution

The fourth proportional to 99,307.60, 148,961.40 and 36,965.20 is: 55,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,307.60 : 148,961.40 = 36,965.20 : x
  2. Step 2: Convert to fraction form
    99,307.60/148,961.40 = 36,965.20/x
  3. Step 3: Cross multiply
    99,307.60x = 148,961.40 × 36,965.20
  4. Step 4: Simplify right side
    99,307.60x = 5,506,387,943.28
  5. Step 5: Solve for x
    x = 5,506,387,943.28/99,307.60
  6. Step 6: Final answer
    x = 55,447.80

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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.