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Finding the Fourth Proportional to 64,070.88, 88,387.14 and 40,185.60

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Solution

The fourth proportional to 64,070.88, 88,387.14 and 40,185.60 is: 55,436.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,070.88 : 88,387.14 = 40,185.60 : x
  2. Step 2: Convert to fraction form
    64,070.88/88,387.14 = 40,185.60/x
  3. Step 3: Cross multiply
    64,070.88x = 88,387.14 × 40,185.60
  4. Step 4: Simplify right side
    64,070.88x = 3,551,890,253.18
  5. Step 5: Solve for x
    x = 3,551,890,253.18/64,070.88
  6. Step 6: Final answer
    x = 55,436.89

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1.5x scale

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.