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Finding the Fourth Proportional to 77,017.20, 115,525.80 and 24,430.80

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Solution

The fourth proportional to 77,017.20, 115,525.80 and 24,430.80 is: 36,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,017.20 : 115,525.80 = 24,430.80 : x
  2. Step 2: Convert to fraction form
    77,017.20/115,525.80 = 24,430.80/x
  3. Step 3: Cross multiply
    77,017.20x = 115,525.80 × 24,430.80
  4. Step 4: Simplify right side
    77,017.20x = 2,822,387,714.64
  5. Step 5: Solve for x
    x = 2,822,387,714.64/77,017.20
  6. Step 6: Final answer
    x = 36,646.20

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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.