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Finding the Fourth Proportional to 70,686.56, 97,506.78 and 42,375.80

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Solution

The fourth proportional to 70,686.56, 97,506.78 and 42,375.80 is: 58,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,686.56 : 97,506.78 = 42,375.80 : x
  2. Step 2: Convert to fraction form
    70,686.56/97,506.78 = 42,375.80/x
  3. Step 3: Cross multiply
    70,686.56x = 97,506.78 × 42,375.80
  4. Step 4: Simplify right side
    70,686.56x = 4,131,927,807.92
  5. Step 5: Solve for x
    x = 4,131,927,807.92/70,686.56
  6. Step 6: Final answer
    x = 58,454.22

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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.