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Finding the Fourth Proportional to 55,228, 76,259.59 and 45,020.64

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Solution

The fourth proportional to 55,228, 76,259.59 and 45,020.64 is: 62,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,228 : 76,259.59 = 45,020.64 : x
  2. Step 2: Convert to fraction form
    55,228/76,259.59 = 45,020.64/x
  3. Step 3: Cross multiply
    55,228x = 76,259.59 × 45,020.64
  4. Step 4: Simplify right side
    55,228x = 3,433,255,547.94
  5. Step 5: Solve for x
    x = 3,433,255,547.94/55,228
  6. Step 6: Final answer
    x = 62,165.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.