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Finding the Fourth Proportional to 71,065.60, 98,075.28 and 40,860.88

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Solution

The fourth proportional to 71,065.60, 98,075.28 and 40,860.88 is: 56,390.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.60 : 98,075.28 = 40,860.88 : x
  2. Step 2: Convert to fraction form
    71,065.60/98,075.28 = 40,860.88/x
  3. Step 3: Cross multiply
    71,065.60x = 98,075.28 × 40,860.88
  4. Step 4: Simplify right side
    71,065.60x = 4,007,442,247.05
  5. Step 5: Solve for x
    x = 4,007,442,247.05/71,065.60
  6. Step 6: Final answer
    x = 56,390.75

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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.