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Finding the Fourth Proportional to 98,656.99, 148,009.78 and 28,543.39

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Solution

The fourth proportional to 98,656.99, 148,009.78 and 28,543.39 is: 42,822.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,656.99 : 148,009.78 = 28,543.39 : x
  2. Step 2: Convert to fraction form
    98,656.99/148,009.78 = 28,543.39/x
  3. Step 3: Cross multiply
    98,656.99x = 148,009.78 × 28,543.39
  4. Step 4: Simplify right side
    98,656.99x = 4,224,700,540.01
  5. Step 5: Solve for x
    x = 4,224,700,540.01/98,656.99
  6. Step 6: Final answer
    x = 42,822.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.