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Finding the Fourth Proportional to 97,870.75, 135,061.77 and 53,158.75

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Solution

The fourth proportional to 97,870.75, 135,061.77 and 53,158.75 is: 73,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,870.75 : 135,061.77 = 53,158.75 : x
  2. Step 2: Convert to fraction form
    97,870.75/135,061.77 = 53,158.75/x
  3. Step 3: Cross multiply
    97,870.75x = 135,061.77 × 53,158.75
  4. Step 4: Simplify right side
    97,870.75x = 7,179,714,865.99
  5. Step 5: Solve for x
    x = 7,179,714,865.99/97,870.75
  6. Step 6: Final answer
    x = 73,359.15

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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.