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Finding the Fourth Proportional to 70,933.61, 97,897.25 and 40,728.40

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Solution

The fourth proportional to 70,933.61, 97,897.25 and 40,728.40 is: 56,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,933.61 : 97,897.25 = 40,728.40 : x
  2. Step 2: Convert to fraction form
    70,933.61/97,897.25 = 40,728.40/x
  3. Step 3: Cross multiply
    70,933.61x = 97,897.25 × 40,728.40
  4. Step 4: Simplify right side
    70,933.61x = 3,987,198,356.90
  5. Step 5: Solve for x
    x = 3,987,198,356.90/70,933.61
  6. Step 6: Final answer
    x = 56,210.28

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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.