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Finding the Fourth Proportional to 64,148.80, 96,225.40 and 19,775.20

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Solution

The fourth proportional to 64,148.80, 96,225.40 and 19,775.20 is: 29,663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,148.80 : 96,225.40 = 19,775.20 : x
  2. Step 2: Convert to fraction form
    64,148.80/96,225.40 = 19,775.20/x
  3. Step 3: Cross multiply
    64,148.80x = 96,225.40 × 19,775.20
  4. Step 4: Simplify right side
    64,148.80x = 1,902,876,530.08
  5. Step 5: Solve for x
    x = 1,902,876,530.08/64,148.80
  6. Step 6: Final answer
    x = 29,663.48

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1.5x scale

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.