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Finding the Fourth Proportional to 55,987.64, 77,262.95 and 30,837.14

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Solution

The fourth proportional to 55,987.64, 77,262.95 and 30,837.14 is: 42,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,987.64 : 77,262.95 = 30,837.14 : x
  2. Step 2: Convert to fraction form
    55,987.64/77,262.95 = 30,837.14/x
  3. Step 3: Cross multiply
    55,987.64x = 77,262.95 × 30,837.14
  4. Step 4: Simplify right side
    55,987.64x = 2,382,568,300.07
  5. Step 5: Solve for x
    x = 2,382,568,300.07/55,987.64
  6. Step 6: Final answer
    x = 42,555.25

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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.