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Finding the Fourth Proportional to 70,887.49, 97,820.86 and 39,053.89

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Solution

The fourth proportional to 70,887.49, 97,820.86 and 39,053.89 is: 53,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,887.49 : 97,820.86 = 39,053.89 : x
  2. Step 2: Convert to fraction form
    70,887.49/97,820.86 = 39,053.89/x
  3. Step 3: Cross multiply
    70,887.49x = 97,820.86 × 39,053.89
  4. Step 4: Simplify right side
    70,887.49x = 3,820,285,106.15
  5. Step 5: Solve for x
    x = 3,820,285,106.15/70,887.49
  6. Step 6: Final answer
    x = 53,892.23

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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.