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Finding the Fourth Proportional to 79,339,968.90, 119,009,953.35 and 28,223,655.30

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Solution

The fourth proportional to 79,339,968.90, 119,009,953.35 and 28,223,655.30 is: 42,335,482.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,339,968.90 : 119,009,953.35 = 28,223,655.30 : x
  2. Step 2: Convert to fraction form
    79,339,968.90/119,009,953.35 = 28,223,655.30/x
  3. Step 3: Cross multiply
    79,339,968.90x = 119,009,953.35 × 28,223,655.30
  4. Step 4: Simplify right side
    79,339,968.90x = 3,358,895,900,619,480
  5. Step 5: Solve for x
    x = 3,358,895,900,619,480/79,339,968.90
  6. Step 6: Final answer
    x = 42,335,482.95

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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.