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Finding the Fourth Proportional to 66,163,700.80, 99,245,551.20 and 63,187,631.20

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Solution

The fourth proportional to 66,163,700.80, 99,245,551.20 and 63,187,631.20 is: 94,781,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,163,700.80 : 99,245,551.20 = 63,187,631.20 : x
  2. Step 2: Convert to fraction form
    66,163,700.80/99,245,551.20 = 63,187,631.20/x
  3. Step 3: Cross multiply
    66,163,700.80x = 99,245,551.20 × 63,187,631.20
  4. Step 4: Simplify right side
    66,163,700.80x = 6,271,091,287,466,318
  5. Step 5: Solve for x
    x = 6,271,091,287,466,318/66,163,700.80
  6. Step 6: Final answer
    x = 94,781,446.80

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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.