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Finding the Fourth Proportional to 66,510,177.90, 99,765,266.85 and 40,868,040.30

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Solution

The fourth proportional to 66,510,177.90, 99,765,266.85 and 40,868,040.30 is: 61,302,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510,177.90 : 99,765,266.85 = 40,868,040.30 : x
  2. Step 2: Convert to fraction form
    66,510,177.90/99,765,266.85 = 40,868,040.30/x
  3. Step 3: Cross multiply
    66,510,177.90x = 99,765,266.85 × 40,868,040.30
  4. Step 4: Simplify right side
    66,510,177.90x = 4,077,210,946,166,053.50
  5. Step 5: Solve for x
    x = 4,077,210,946,166,053.50/66,510,177.90
  6. Step 6: Final answer
    x = 61,302,060.45

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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.