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Finding the Fourth Proportional to 70,907.10, 97,845.27 and 40,686.30

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Solution

The fourth proportional to 70,907.10, 97,845.27 and 40,686.30 is: 56,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.10 : 97,845.27 = 40,686.30 : x
  2. Step 2: Convert to fraction form
    70,907.10/97,845.27 = 40,686.30/x
  3. Step 3: Cross multiply
    70,907.10x = 97,845.27 × 40,686.30
  4. Step 4: Simplify right side
    70,907.10x = 3,980,962,008.80
  5. Step 5: Solve for x
    x = 3,980,962,008.80/70,907.10
  6. Step 6: Final answer
    x = 56,143.35

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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.