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Finding the Fourth Proportional to 70,576.88, 97,398.60 and 38,748.20

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Solution

The fourth proportional to 70,576.88, 97,398.60 and 38,748.20 is: 53,473.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,576.88 : 97,398.60 = 38,748.20 : x
  2. Step 2: Convert to fraction form
    70,576.88/97,398.60 = 38,748.20/x
  3. Step 3: Cross multiply
    70,576.88x = 97,398.60 × 38,748.20
  4. Step 4: Simplify right side
    70,576.88x = 3,774,020,432.52
  5. Step 5: Solve for x
    x = 3,774,020,432.52/70,576.88
  6. Step 6: Final answer
    x = 53,473.89

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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.