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Finding the Fourth Proportional to 70,391.52, 97,116.03 and 40,155.03

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Solution

The fourth proportional to 70,391.52, 97,116.03 and 40,155.03 is: 55,400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,391.52 : 97,116.03 = 40,155.03 : x
  2. Step 2: Convert to fraction form
    70,391.52/97,116.03 = 40,155.03/x
  3. Step 3: Cross multiply
    70,391.52x = 97,116.03 × 40,155.03
  4. Step 4: Simplify right side
    70,391.52x = 3,899,697,098.13
  5. Step 5: Solve for x
    x = 3,899,697,098.13/70,391.52
  6. Step 6: Final answer
    x = 55,400.10

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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.