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Finding the Fourth Proportional to 98,729.70, 148,051.35 and 39,545.70

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Solution

The fourth proportional to 98,729.70, 148,051.35 and 39,545.70 is: 59,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,729.70 : 148,051.35 = 39,545.70 : x
  2. Step 2: Convert to fraction form
    98,729.70/148,051.35 = 39,545.70/x
  3. Step 3: Cross multiply
    98,729.70x = 148,051.35 × 39,545.70
  4. Step 4: Simplify right side
    98,729.70x = 5,854,794,271.70
  5. Step 5: Solve for x
    x = 5,854,794,271.70/98,729.70
  6. Step 6: Final answer
    x = 59,301.25

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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.