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Finding the Fourth Proportional to 66,781,081.68, 100,027,649.87 and 45,096,442.08

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Solution

The fourth proportional to 66,781,081.68, 100,027,649.87 and 45,096,442.08 is: 67,547,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,781,081.68 : 100,027,649.87 = 45,096,442.08 : x
  2. Step 2: Convert to fraction form
    66,781,081.68/100,027,649.87 = 45,096,442.08/x
  3. Step 3: Cross multiply
    66,781,081.68x = 100,027,649.87 × 45,096,442.08
  4. Step 4: Simplify right side
    66,781,081.68x = 4,510,891,118,535,492
  5. Step 5: Solve for x
    x = 4,510,891,118,535,492/66,781,081.68
  6. Step 6: Final answer
    x = 67,547,440.16

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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.