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Finding the Fourth Proportional to 44,486.90, 66,730.35 and 42,643.70

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Solution

The fourth proportional to 44,486.90, 66,730.35 and 42,643.70 is: 63,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,486.90 : 66,730.35 = 42,643.70 : x
  2. Step 2: Convert to fraction form
    44,486.90/66,730.35 = 42,643.70/x
  3. Step 3: Cross multiply
    44,486.90x = 66,730.35 × 42,643.70
  4. Step 4: Simplify right side
    44,486.90x = 2,845,629,026.30
  5. Step 5: Solve for x
    x = 2,845,629,026.30/44,486.90
  6. Step 6: Final answer
    x = 63,965.55

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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.