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Finding the Fourth Proportional to 70,728.60, 97,603.52 and 38,897.50

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Solution

The fourth proportional to 70,728.60, 97,603.52 and 38,897.50 is: 53,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,728.60 : 97,603.52 = 38,897.50 : x
  2. Step 2: Convert to fraction form
    70,728.60/97,603.52 = 38,897.50/x
  3. Step 3: Cross multiply
    70,728.60x = 97,603.52 × 38,897.50
  4. Step 4: Simplify right side
    70,728.60x = 3,796,532,919.20
  5. Step 5: Solve for x
    x = 3,796,532,919.20/70,728.60
  6. Step 6: Final answer
    x = 53,677.48

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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.