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Finding the Fourth Proportional to 70,358,547.78, 105,551,771.40 and 21,834,330.48

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Solution

The fourth proportional to 70,358,547.78, 105,551,771.40 and 21,834,330.48 is: 32,755,824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,358,547.78 : 105,551,771.40 = 21,834,330.48 : x
  2. Step 2: Convert to fraction form
    70,358,547.78/105,551,771.40 = 21,834,330.48/x
  3. Step 3: Cross multiply
    70,358,547.78x = 105,551,771.40 × 21,834,330.48
  4. Step 4: Simplify right side
    70,358,547.78x = 2,304,652,259,497,012.50
  5. Step 5: Solve for x
    x = 2,304,652,259,497,012.50/70,358,547.78
  6. Step 6: Final answer
    x = 32,755,824.73

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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.