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Finding the Fourth Proportional to 68,342,774.40, 102,364,862.40 and 53,076,931.20

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Solution

The fourth proportional to 68,342,774.40, 102,364,862.40 and 53,076,931.20 is: 79,499,446.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,342,774.40 : 102,364,862.40 = 53,076,931.20 : x
  2. Step 2: Convert to fraction form
    68,342,774.40/102,364,862.40 = 53,076,931.20/x
  3. Step 3: Cross multiply
    68,342,774.40x = 102,364,862.40 × 53,076,931.20
  4. Step 4: Simplify right side
    68,342,774.40x = 5,433,212,758,902,268
  5. Step 5: Solve for x
    x = 5,433,212,758,902,268/68,342,774.40
  6. Step 6: Final answer
    x = 79,499,446.82

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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.