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Finding the Fourth Proportional to 70,757.85, 97,642.31 and 38,925.93

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Solution

The fourth proportional to 70,757.85, 97,642.31 and 38,925.93 is: 53,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.85 : 97,642.31 = 38,925.93 : x
  2. Step 2: Convert to fraction form
    70,757.85/97,642.31 = 38,925.93/x
  3. Step 3: Cross multiply
    70,757.85x = 97,642.31 × 38,925.93
  4. Step 4: Simplify right side
    70,757.85x = 3,800,817,529.47
  5. Step 5: Solve for x
    x = 3,800,817,529.47/70,757.85
  6. Step 6: Final answer
    x = 53,715.84

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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.