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Finding the Fourth Proportional to 70,737.51, 97,617.78 and 38,908.56

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Solution

The fourth proportional to 70,737.51, 97,617.78 and 38,908.56 is: 53,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,737.51 : 97,617.78 = 38,908.56 : x
  2. Step 2: Convert to fraction form
    70,737.51/97,617.78 = 38,908.56/x
  3. Step 3: Cross multiply
    70,737.51x = 97,617.78 × 38,908.56
  4. Step 4: Simplify right side
    70,737.51x = 3,798,167,250.20
  5. Step 5: Solve for x
    x = 3,798,167,250.20/70,737.51
  6. Step 6: Final answer
    x = 53,693.82

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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.