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Finding the Fourth Proportional to 54,618, 75,368.04 and 30,417.15

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Solution

The fourth proportional to 54,618, 75,368.04 and 30,417.15 is: 41,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,618 : 75,368.04 = 30,417.15 : x
  2. Step 2: Convert to fraction form
    54,618/75,368.04 = 30,417.15/x
  3. Step 3: Cross multiply
    54,618x = 75,368.04 × 30,417.15
  4. Step 4: Simplify right side
    54,618x = 2,292,480,977.89
  5. Step 5: Solve for x
    x = 2,292,480,977.89/54,618
  6. Step 6: Final answer
    x = 41,972.99

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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.