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Finding the Fourth Proportional to 71,752,215.60, 107,596,830.60 and 28,607,079.60

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Solution

The fourth proportional to 71,752,215.60, 107,596,830.60 and 28,607,079.60 is: 42,898,063.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,752,215.60 : 107,596,830.60 = 28,607,079.60 : x
  2. Step 2: Convert to fraction form
    71,752,215.60/107,596,830.60 = 28,607,079.60/x
  3. Step 3: Cross multiply
    71,752,215.60x = 107,596,830.60 × 28,607,079.60
  4. Step 4: Simplify right side
    71,752,215.60x = 3,078,031,097,681,915.50
  5. Step 5: Solve for x
    x = 3,078,031,097,681,915.50/71,752,215.60
  6. Step 6: Final answer
    x = 42,898,063.45

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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.