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Finding the Fourth Proportional to 70,486, 97,261.74 and 38,646.52

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Solution

The fourth proportional to 70,486, 97,261.74 and 38,646.52 is: 53,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,486 : 97,261.74 = 38,646.52 : x
  2. Step 2: Convert to fraction form
    70,486/97,261.74 = 38,646.52/x
  3. Step 3: Cross multiply
    70,486x = 97,261.74 × 38,646.52
  4. Step 4: Simplify right side
    70,486x = 3,758,827,780.14
  5. Step 5: Solve for x
    x = 3,758,827,780.14/70,486
  6. Step 6: Final answer
    x = 53,327.30

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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.