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Finding the Fourth Proportional to 94,478, 130,368.30 and 54,189.68

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Solution

The fourth proportional to 94,478, 130,368.30 and 54,189.68 is: 74,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,478 : 130,368.30 = 54,189.68 : x
  2. Step 2: Convert to fraction form
    94,478/130,368.30 = 54,189.68/x
  3. Step 3: Cross multiply
    94,478x = 130,368.30 × 54,189.68
  4. Step 4: Simplify right side
    94,478x = 7,064,616,459.14
  5. Step 5: Solve for x
    x = 7,064,616,459.14/94,478
  6. Step 6: Final answer
    x = 74,775.25

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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.