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Finding the Fourth Proportional to 98,860, 148,308.64 and 39,700.32

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Solution

The fourth proportional to 98,860, 148,308.64 and 39,700.32 is: 59,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,860 : 148,308.64 = 39,700.32 : x
  2. Step 2: Convert to fraction form
    98,860/148,308.64 = 39,700.32/x
  3. Step 3: Cross multiply
    98,860x = 148,308.64 × 39,700.32
  4. Step 4: Simplify right side
    98,860x = 5,887,900,466.76
  5. Step 5: Solve for x
    x = 5,887,900,466.76/98,860
  6. Step 6: Final answer
    x = 59,557.97

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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.