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Finding the Fourth Proportional to 70,757.76, 97,643.34 and 38,926.40

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Solution

The fourth proportional to 70,757.76, 97,643.34 and 38,926.40 is: 53,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.76 : 97,643.34 = 38,926.40 : x
  2. Step 2: Convert to fraction form
    70,757.76/97,643.34 = 38,926.40/x
  3. Step 3: Cross multiply
    70,757.76x = 97,643.34 × 38,926.40
  4. Step 4: Simplify right side
    70,757.76x = 3,800,903,710.18
  5. Step 5: Solve for x
    x = 3,800,903,710.18/70,757.76
  6. Step 6: Final answer
    x = 53,717.13

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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.