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Finding the Fourth Proportional to 70,538.88, 97,345.80 and 38,709.84

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Solution

The fourth proportional to 70,538.88, 97,345.80 and 38,709.84 is: 53,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,538.88 : 97,345.80 = 38,709.84 : x
  2. Step 2: Convert to fraction form
    70,538.88/97,345.80 = 38,709.84/x
  3. Step 3: Cross multiply
    70,538.88x = 97,345.80 × 38,709.84
  4. Step 4: Simplify right side
    70,538.88x = 3,768,240,342.67
  5. Step 5: Solve for x
    x = 3,768,240,342.67/70,538.88
  6. Step 6: Final answer
    x = 53,420.76

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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.