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Finding the Fourth Proportional to 28,517,164.80, 42,786,244.80 and 9,348,547.20

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Solution

The fourth proportional to 28,517,164.80, 42,786,244.80 and 9,348,547.20 is: 14,026,262.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517,164.80 : 42,786,244.80 = 9,348,547.20 : x
  2. Step 2: Convert to fraction form
    28,517,164.80/42,786,244.80 = 9,348,547.20/x
  3. Step 3: Cross multiply
    28,517,164.80x = 42,786,244.80 × 9,348,547.20
  4. Step 4: Simplify right side
    28,517,164.80x = 399,989,229,023,554.50
  5. Step 5: Solve for x
    x = 399,989,229,023,554.50/28,517,164.80
  6. Step 6: Final answer
    x = 14,026,262.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.