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Finding the Fourth Proportional to 67,398,119.64, 92,979,863.01 and 39,506,689.80

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Solution

The fourth proportional to 67,398,119.64, 92,979,863.01 and 39,506,689.80 is: 54,501,915.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,398,119.64 : 92,979,863.01 = 39,506,689.80 : x
  2. Step 2: Convert to fraction form
    67,398,119.64/92,979,863.01 = 39,506,689.80/x
  3. Step 3: Cross multiply
    67,398,119.64x = 92,979,863.01 × 39,506,689.80
  4. Step 4: Simplify right side
    67,398,119.64x = 3,673,326,605,582,564
  5. Step 5: Solve for x
    x = 3,673,326,605,582,564/67,398,119.64
  6. Step 6: Final answer
    x = 54,501,915.26

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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.