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Finding the Fourth Proportional to 34,339,978.80, 51,509,968.20 and 10,402,340.40

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Solution

The fourth proportional to 34,339,978.80, 51,509,968.20 and 10,402,340.40 is: 15,603,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,339,978.80 : 51,509,968.20 = 10,402,340.40 : x
  2. Step 2: Convert to fraction form
    34,339,978.80/51,509,968.20 = 10,402,340.40/x
  3. Step 3: Cross multiply
    34,339,978.80x = 51,509,968.20 × 10,402,340.40
  4. Step 4: Simplify right side
    34,339,978.80x = 535,824,223,209,575.31
  5. Step 5: Solve for x
    x = 535,824,223,209,575.31/34,339,978.80
  6. Step 6: Final answer
    x = 15,603,510.60

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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.