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Finding the Fourth Proportional to 70,261.49, 96,963.16 and 38,430.39

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Solution

The fourth proportional to 70,261.49, 96,963.16 and 38,430.39 is: 53,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,261.49 : 96,963.16 = 38,430.39 : x
  2. Step 2: Convert to fraction form
    70,261.49/96,963.16 = 38,430.39/x
  3. Step 3: Cross multiply
    70,261.49x = 96,963.16 × 38,430.39
  4. Step 4: Simplify right side
    70,261.49x = 3,726,331,569.62
  5. Step 5: Solve for x
    x = 3,726,331,569.62/70,261.49
  6. Step 6: Final answer
    x = 53,035.19

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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.