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Finding the Fourth Proportional to 70,721.49, 97,594.83 and 38,888.49

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Solution

The fourth proportional to 70,721.49, 97,594.83 and 38,888.49 is: 53,665.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,721.49 : 97,594.83 = 38,888.49 : x
  2. Step 2: Convert to fraction form
    70,721.49/97,594.83 = 38,888.49/x
  3. Step 3: Cross multiply
    70,721.49x = 97,594.83 × 38,888.49
  4. Step 4: Simplify right side
    70,721.49x = 3,795,315,570.51
  5. Step 5: Solve for x
    x = 3,795,315,570.51/70,721.49
  6. Step 6: Final answer
    x = 53,665.66

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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.