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Finding the Fourth Proportional to 65,929.60, 99,124.80 and 64,547.20

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Solution

The fourth proportional to 65,929.60, 99,124.80 and 64,547.20 is: 97,046.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,929.60 : 99,124.80 = 64,547.20 : x
  2. Step 2: Convert to fraction form
    65,929.60/99,124.80 = 64,547.20/x
  3. Step 3: Cross multiply
    65,929.60x = 99,124.80 × 64,547.20
  4. Step 4: Simplify right side
    65,929.60x = 6,398,228,290.56
  5. Step 5: Solve for x
    x = 6,398,228,290.56/65,929.60
  6. Step 6: Final answer
    x = 97,046.37

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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.