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Finding the Fourth Proportional to 70,838.40, 97,755.48 and 39,006.48

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Solution

The fourth proportional to 70,838.40, 97,755.48 and 39,006.48 is: 53,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,838.40 : 97,755.48 = 39,006.48 : x
  2. Step 2: Convert to fraction form
    70,838.40/97,755.48 = 39,006.48/x
  3. Step 3: Cross multiply
    70,838.40x = 97,755.48 × 39,006.48
  4. Step 4: Simplify right side
    70,838.40x = 3,813,097,175.51
  5. Step 5: Solve for x
    x = 3,813,097,175.51/70,838.40
  6. Step 6: Final answer
    x = 53,828.11

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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.