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Finding the Fourth Proportional to 98,887.40, 148,335.20 and 28,766.71

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Solution

The fourth proportional to 98,887.40, 148,335.20 and 28,766.71 is: 43,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,887.40 : 148,335.20 = 28,766.71 : x
  2. Step 2: Convert to fraction form
    98,887.40/148,335.20 = 28,766.71/x
  3. Step 3: Cross multiply
    98,887.40x = 148,335.20 × 28,766.71
  4. Step 4: Simplify right side
    98,887.40x = 4,267,115,681.19
  5. Step 5: Solve for x
    x = 4,267,115,681.19/98,887.40
  6. Step 6: Final answer
    x = 43,151.26

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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.