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Finding the Fourth Proportional to 98,797.56, 136,341.72 and 56,358.60

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Solution

The fourth proportional to 98,797.56, 136,341.72 and 56,358.60 is: 77,775.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,797.56 : 136,341.72 = 56,358.60 : x
  2. Step 2: Convert to fraction form
    98,797.56/136,341.72 = 56,358.60/x
  3. Step 3: Cross multiply
    98,797.56x = 136,341.72 × 56,358.60
  4. Step 4: Simplify right side
    98,797.56x = 7,684,028,460.79
  5. Step 5: Solve for x
    x = 7,684,028,460.79/98,797.56
  6. Step 6: Final answer
    x = 77,775.49

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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.